This section contains a summary of Babylon 5's story arc (the 5-year plotline) up to, but not including, EPNAME Note that this is chock full of spoilers!

Season One began with "Midnight on the Firing Line," about 6 months later. Lt. Cmdr Susan Ivanova replaced Lt. Cmdr. Takashima as second-in-command; her dislike of the Psi Corps became evident when Talia Winters arrived. A Centauri agricultural outpost was attacked without provocation by the Narns. (In broad strokes, this episode portrayed the Narns as the "bad guys" and the Centauri as comic relief.) Luis Santiago was reelected President of the Earth Alliance.

A "Soul Hunter," a member of an order which collects and preserves important souls, found himself on the station, and attempted to collect Delenn's soul prematurely. The Minbari, it was revealed, greatly value souls; they prevented a soul hunter from taking the soul of their great leader Dukhat, so that his soul would be reborn into the next generation. Delenn was called Satai by the soul hunter, which prompted Sinclair to wonder if something was going on, as Satai is the title used my members of the Grey Council, the Minbari ruling body and highest religious authority.

In "Mind War," two Psi Cops -- P12 level telepaths, including Bester (played by Walter Koenig) -- came to the station in search of telepath Jason Ironheart, who had achieved telekinetic abilities and was transforming into something more than human. Ironheart warned Sinclair that the Psi Corps is starting to pull the strings in the government back on Earth. When Bester's partner was killed, Sinclair made a new enemy. Before departing, Ironheart gave Talia a gift: telekinesis, and maybe other abilities as well.

"The War Prayer" introduced members of the Homeguard, an anti-alien organization back on Earth.

"And The Sky Full of Stars" explored what happened to Sinclair on the Battle of the Line, 10 years before in the Earth-Minbari War. Interrogated and forced to relive the battle, we saw Sinclair ram a Minbari Cruiser, only to wake up on board, interrogated by the Grey Council. He recognizes Delenn as one of the Grey Council. After escaping from his interrogators, he chose not to reveal to Delenn that he remembered part of his missing 24 hours.

"Deathwalker" was a notorious war criminal from the Dilgar War, fought by Earth and others several decades earlier. She had a substance she claimed granted immortality -- but only at the cost of another's life. The Vorlons destroyed her ship to prevent Earth from gaining the secret of immortality.

"Survivors" pulled Garibaldi back into his alcoholism amid accusations of sabotage. The real culprit was the Homeguard.

"Signs and Portents" deals with an attack by raiders on the station. The B-story, in which Londo acquired the long-lost symbol of his empire, the Eye, was more important. A mysterious, polite man named Morden inquired, "What do you want?" of the alien ambassadors, and seemed to like Londo's response -- for the Centauri to reclaim their lost empire -- the best. The Eye was captured by the raiders, who were destroyed by a mysterious ship that appeared out of the shadows. Morden returned the Eye to Londo, "from friends you don't know you have."

In the two-parter, "A Voice in the Wilderness," it was discovered that the planet below B5 is not as dead as was thought. The Mars colony broke out in rebellion. A dying alien was found controlling vast, tremendously powerful machinery on the planet below. Draal, an old friend of Delenn's, took charge of the machinery in the planet, warning away all who would try to take it for themselves. The Mars rebellion was put down by Earth Alliance security forces.

In "Babylon Squared," Babylon 4 -- the biggest of the Babylon stations, which dissapeared 24 hours after coming online, suddenly reappeared. Delenn was chosen by the Grey Council to be their new leader, but declined because a Minbari prophecy told her that her destiny was on Babylon 5. She left with a powerful device called a triluminary. On Babylon 4, as time disturbances flashed back and forward to other times (including a scene where something was coming through the walls of the station, being fought off by Garibaldi, as Sinclair was pushed into the crowds), the crew attempted to evacuate the crew of B4. A mysterious alien, Zathras, appeared and told of a great, terrible war, and the attempt to pull B4 through time to use it as a base of operations. Zathras was looking for "The One" -- the great leader of an effort to bring peace to the galaxy. Babylon 4 was evacuated, but Zathras, trapped, was rescued by "The One" -- who turned out to be a much older Sinclair, aided apparently by Delenn.

"The Quality of Mercy" revealed a clinic run by Dr. Franklin in the downbelow sections, as well as an alien healing machine that transfers "life force" from one person to another.

"Chrysalis," the season one finale, referred to the cocoon that Delenn began to build using a mysterious crystalline machine and the triluminary. Garibaldi uncovered a plot to assassinate the Earth President, but was shot in the back by his right-hand man, left for dead. Morden reappeared and offered to take care of a problem for Londo, dealing with a region contested with the Narns. Delenn spoke to Ambassador Kosh, who revealed something to her that verified her interpretation of a prophecy. She confronted Sinclair about his knowledge of his interrogation, but entered into her cocoon before they could talk. Londo was horrified to find that a Narn outpost was utterly destroyed by mysterious forces. The president was assassinated, and the vice president was sworn in immediately. G'Kar left to investigate the destruction of the Narn base.

Season two opened in "Points of Departure" with the reassignment of Sinclair to ambassadorial duties on the Minbari homeworld and the assignment of Captain John Sheridan to command Babylon 5. Sheridan's connection to the Minbari War was revealed; he had one of the few victories over a Minbari warship. Lennier revealed why the Minbari surrendered; when Sinclair was captured, it was discovered that Minbari souls were being reborn in humans. Because Minbari do not kill other Minbari, the religious caste called off the war to stop harming their own souls.

In "The Geometry of Shadows," Refa, a high-ranking Centauri noble, asked Londo to pledge his help in seizing the throne at some point.

In "A Distant Star," Lt. Keffer saw a Shadow ship in hyperspace and vowed to find out what it was.

"A Spider in the Web" revealed a mysterious "Bureau 13" operating out of the San Diego wastelands. An assassin, controlled by the Bureau, attempted to thwart a peaceful settlement of the situation on Mars. Scanning his mind, Talia saw a Psi Cop present at the operation that programmed the assassin, but she didn't tell anybody else. Sheridan's interest in conspiracy theories was revealed as he attempted to solve the puzzle, and the existence of a plant among the B5 crew, code-named Control, was hinted at.

In "Soul Mates," Londo's three wives came to the station; one, who knows G'Kar, tried to murder him. He divorced her and one of the others. Talia's ex-husband, from an arranged marriage courtesy of the Corps, tried to woo her back.

In "A Race Through Dark Places," Bester returned to Babylon 5. He believed an underground railroad was smuggling unregistered telepaths outside of Psi-Corps' control. Talia was captured by the rogue telepaths and told gruesome stories of the Corps' true nature: forced breeding, murder, and coercion. She and the others tricked Bester into thinking the railroad was stopped. Dr. Franklin was revealed as one of the railroad's participants. Talia discovered another part of Ironheart's "gift" -- she is apparently now immune to telepathic scans.

At Refa's behest, as the Centauri emperor lay dying, Londo asked Morden to destroy a major Narn colony in "The Coming of Shadows." The Narns, believing the Centauri military responsible, declared war. Sinclair sent a message to Garibaldi via a network of "rangers," spies, a group he apparently heads.

In "All Alone in the Night," Delenn was removed from the Grey Council, and a member of the warrior caste replaced her. We learned that Sheridan had been secretly evaluating the loyalty of the station's command staff, and is in league with a group (headed by General Hague, a member of the Joint Chiefs of Staff) out to expose what they believe is an attempt by the Psi-Corps and others to control the government. Of special note is a densely-packed dream sequence in which Sheridan is visited by Ambassador Kosh.

President Clark's personal physician fled to the station in "Hunter, Prey" with files proving that Clark wasn't sick as he claimed when he left Earth Force One just before it blew up and killed President Santiago. Sheridan gave the files to a representative of General Hague. Kosh agreed to teach Sheridan until he is ready "to fight legends" -- at which point it was implied Kosh would reveal himself to Sheridan.

The Narn-Centauri war hit close to home during a reporter's visit to Babylon 5 in "And Now For a Word" -- the Centauri were using B5 as a transfer point for military equipment, prompting a Narn attack. Back on Earth, the Clark government formed the Ministry of Public Morale and the Office of Public Information.

"In the Shadow of Z'ha'dum" revealed Morden's secret to Sheridan: he was on the vessel carrying Sheridan's wife, whose crew accidentally reawakened the Shadows four years earlier. The Shadows, Sheridan learned, are an ancient race, "old when even the ancients were young," defeated in the last Great War 10,000 years ago by a coalition of other ancient races known as the First Ones, of whom the Vorlons are the last remaining member. The Shadows, Sheridan learned, won't risk an all-out frontal assault as long as their existence is a secret. Earth's new Ministry of Peace sent a recruiter to Babylon 5 to enlist people in its citizen-vigilance program, the Nightwatch.

The entire population of the Markab, a non-aligned race, was wiped out by a virulent disease in "Confessions and Lamentations."

Talia's "Divided Loyalties" were revealed when former station telepath Lyta Alexander, now a member of an anti-Corps underground movement, visited the station and discovered that Talia was a spy, probably Control. Talia's personality was destroyed and she was shipped off the station. Ivanova admitted the reason she's so reluctant to be scanned: she's a latent telepath.

The Narn-Centauri War came to an abrupt end in "The Long, Twilight Struggle" with the help of the Shadows, who eliminated the entire Narn fleet while Centauri ships decimated the Narn homeworld from orbit. Sheridan granted G'Kar asylum on Babylon 5. Draal, on the planet below the station, put the great machine at Sheridan's disposal. Delenn introduced Sheridan to the Rangers.

Earth signed a non-aggression pact with the Centauri in "The Fall of Night." Unfortunately, Sheridan's sheltering of a Narn warship brought the station under Centauri attack, and Sheridan was forced to destroy a Centauri cruiser. When two Centauri attempted to assassinate Sheridan, Kosh intervened, revealing himself in the process: he appeared as an angelic being of light, a religious figure from legend -- but a different figure to every race who saw him. Keffer located a Shadow ship. It shot him out of space, but his recording was broadcast on the news, making the Shadows known to all.

"Matters of Honor" brought Marcus Cole, a Ranger, to the station; he led Sheridan and Delenn to a new ship, the White Star, a combination of Minbari and Vorlon technology. Pushing the White Star to its limits, Sheridan destroyed a Shadow cruiser. Londo attempted to sever his ties with the Shadows. Morden met with a Psi Cop, apparently far from the first such meeting.

The Centauri sent a replacement for G'Kar to the station in "A Day in the Strife" and threatened to persecute the families of G'Kar's supporters unless he gave up his exile and faced trial. Meanwhile, Ta'Lon, a Narn whose life Sheridan saved some months earlier ("All Alone in the Night") pledged to act as Sheridan's bodyguard. Londo arranged to have Vir sent off to Minbar as the new Centauri diplomatic liaison.

In "Passing Through Gethsemane," Lyta Alexander, the station's first telepath and the person who unmasked Talia's Bureau-13-implanted personality, returned from a stay on the Vorlon homeworld to become Ambassador Kosh's attache. The Vorlons appear to have modified her, possibly even enabling her to carry one of them inside her.

The conspiracy of light made its move against President Clark in "Voices of Authority" by releasing a recording of Morden and Clark planning Santiago's assassination. Ivanova located another race of First Ones and secured a promise of help in the fight against the Shadows.

G'Kar learned of Londo's involvement with the Shadows in "Dust to Dust." He was sentenced to prison for assaulting Londo, and was visited in a dream by Kosh, who posed as the Narn deity G'Lan.

In "Point of No Return," President Clark declared martial law on Babylon 5 after dissolving the Senate back home. An attempt by the Nightwatch to take over the station was foiled, barely, but Sheridan was forced to accept G'Kar's help and begin using Narn as station security personnel.

Despite his temporary victory, Sheridan was soon forced to cut the station's ties with Earth in "Severed Dreams," following in the footsteps of several secessionist colony worlds after the bombing of civilians on Mars. Delenn, meanwhile, confronted the Grey Council about its unwillingness to intervene in the spreading Shadow-initiated conflicts among the nonaligned worlds; the confrontation led to the shattering of the Council. A losing battle for control of the station was resolved only by the arrival of Minbari cruisers under the command of Delenn and other former Council members, who declared Babylon 5 under Minbari protection.

In "Ceremonies of Light and Dark," Sheridan admitted his growing affection for Delenn. Londo threatened Refa with death unless the Centauri broke off their relationship with Morden and the Shadows.

Vir returned to the station after being demoted for running an underground railroad for Narn refugees in "Sic Transit Vir."

Realizing that the station would be better off with more protectors than just the Minbari, Sheridan and Ivanova negotiated with several minor races to supplement the station's defenses in "A Late Delivery From Avalon."

Bester delivered a "Ship of Tears" to the station: a Shadow-bound cargo ship with hundreds of cybernetically enhanced human telepaths. Telepaths, the crew soon discovered, can disrupt the link between Shadow ships and their pilots.

Franklin resigned his post as chief medical officer in "Interludes and Examinations." Morden tricked Londo into vowing to crush Refa, and asking for Morden's help to do it. Sheridan convinced Kosh to mount a Vorlon attack on a small Shadow fleet. The Vorlons won the battle, but in retaliation, the Shadows killed Kosh.

In "War Without End," Ambassador Sinclair received a personally addressed letter from 900 years in the past. The note brought him to Babylon 5, where he led Delenn, Sheridan, and others in an expedition to pull Babylon 4 a thousand years into the past, when history recorded its role in the defeat of the Shadows. Draal, in the Great Machine, opened a time rift, and sent his aide Zathras with time-travel equipment and the chrysalis machine Delenn would eventually use to become half-human. During the time shift, Sheridan was pulled forward seventeen years to find himself in Londo's throne room on a ruined Centauri Prime. He and Delenn were thrown into a cell, where he learned that he had been victorious over the Shadows, but only to a point, and that he and Delenn had had a son, David. Londo, afflicted with a parasite called a "keeper" that monitored his every move, let the two of them go, then urged G'Kar to kill him before the keeper alerted anyone. The keeper awoke, and Londo and G'Kar died at each other's hands, leaving Vir to assume the throne. Meanwhile, on Babylon 4, the crew pulled Sheridan back to the present, and Sinclair stayed behind to supervise the station's transfer to the Minbari a thousand years before, as described in the letter from Valen -- who was actually a transformed Sinclair.

The forces of light, with the help of Lyta and some Minbari telepaths, emerged victorious from a direct confrontation with Shadow war cruisers in "Walkabout." A new Vorlon ambassador, also named Kosh, arrived on the station.

Shortly thereafter, in "Grey 17 Is Missing," Sheridan and his allies began openly recruiting telepaths of all races for use as soldiers against the Shadows.

Fearing a power struggle in the royal court, Londo had Refa eliminated in "And the Rock Cried Out, No Hiding Place." Meanwhile, Sheridan discovered the next likely target of the Shadows.

With the telepaths deployed among the races of the Army of Light, Sheridan assembled a strike force in "Shadow Dancing." His first direct confrontation with the Shadows was a success, if a costly one; the Shadows were beaten back. Franklin, meanwhile, returned to his duties after a brush with death.

Their defeat prompted the Shadows to send an emissary to Sheridan, inviting him to meet with them on their homeworld, Z'ha'dum: his wife Anna, presumed dead. There, they tried to convince him to stop leading the Army of Light, and revealed their purpose: to encourage accelerated evolution among the lesser races by provoking conflict and weeding out the weak. Unconvinced, Sheridan fled his hosts and, leaping into a gaping abyss, summoned the White Star to self-destruct over a huge Shadow city in a huge thermonuclear blast.

G'Kar set out in search of Garibaldi, who was taken by a Shadow ship during Sheridan's confrontation with the Shadows, in "The Hour of the Wolf." Londo took up a position in the royal court, but soon discovered that the Emperor was insane and had made a deal with the Shadows in the belief that they would elevate him to godhood. A rescue mission was mounted to Z'ha'dum, but Sheridan was nowhere to be found. Somehow, though, he survived, and found himself at the bottom of the chasm accompanied by an enigmatic alien.

The alien, Lorien, claimed to be the first of the First Ones, the reason the Shadows always return to Z'ha'dum. G'Kar never found out "Whatever Happened to Mr. Garibaldi," and was captured by the Centauri. Londo promised G'Kar the freedom of the Narn homeworld if G'Kar would help him unseat Emperor Cartagia. Meanwhile, back on Babylon 5, the League of Non-aligned Worlds splintered thanks to Sheridan's disappearance, and Delenn summoned the Rangers to organize a final strike on Z'ha'dum.

Garibaldi was recovered from a mysterious ship in "The Summoning," while Ivanova and Marcus set out in search of more First Ones. What they found instead was a vast Vorlon fleet on a mission to destroy any world touched by the Shadows. Lyta turned against Kosh. Sheridan returned with Lorien, just in time to thwart an attempt by the frightened Non-Aligned Worlds to break up the Army of Light.

In "Falling Toward Apotheosis," Londo learned of Cartagia's plan to allow the Vorlons to destroy Centauri Prime, thus propelling him to godhood in a glorious explosion of fire. Londo convinced Cartagia to first go to Narn and try G'Kar for crimes against the Centauri; even so, Cartagia had a guard pluck out G'Kar's left eye in a moment of pique. As the Vorlon fleet proceeded with its plan, destroying world after world and sending refugees streaming to Babylon 5, Sheridan and Lorien battled and killed Kosh. Delenn learned that Sheridan's resurrection is only temporary; he has no more than twenty years left.

During "The Long Night" before the Army of Light's planned confrontation with the Vorlons, the Shadows unleashed their own planet-killer, prompting Sheridan to lure them into direct battle with the Vorlons to settle the conflict once and for all. With G'Kar's help, Londo and Vir assassinated Cartagia; the royal court, most unaware of the plot, elected Londo prime minister to quickly rid Centauri Prime of Shadow influence and stave off the impending Vorlon attack. Londo ordered the withdrawal of Centauri forces from Narn.

The Shadow War came to an abrupt end in "Into the Fire." Confronted by a united fleet of the younger races they were supposed to be shepherding, the Vorlons and Shadows attempted to force Sheridan to choose one of the two approaches to growth and evolution. Sheridan rejected both choices; the younger races didn't need shepherding any more, and would never again act as pawns. The Shadows and Vorlons, convinced that their battle for philosophical dominance could no longer continue, departed for the Rim, accompanied by Lorien and the last of the remaining First Ones. Londo, meanwhile, destroyed the Shadow base on Centauri Prime, earning a promise of retribution by the Shadows' allies.

Postwar euphoria was brief; with the departure of the Shadows, President Clark turned his attention back to Babylon 5, launching a propaganda war in lieu of a futile direct attack. In "Epiphanies," Sheridan was alerted to the first phase of the war by psi-cop Bester, who demanded to be taken to Z'ha'dum in exchange for the information. The crew arrived in time to see the Shadows' dark servants escaping with unknown quantities of Shadow technology, just before the sudden self-destruction of the entire planet. Their first target: Centauri Prime, where they planted a Keeper ("War Without End, part 2") on the body of the newly-appointed Regent. After receiving a mysterious coded message, Garibaldi resigned his post.

Delenn returned to Minbar to begin "Atonement" for her cross-species relationship with Sheridan, strictly forbidden by traditional Minbari beliefs about racial purity. Under the influence of a mind probe, the first days of her membership on the Grey Council came to light, including the fact that she ordered the start of the Earth-Minbari War. More importantly, she discovered that she was a direct descendant of Valen, and thus wasn't a racially pure Minbari to begin with -- and neither were untold millions of other Minbari descended from Sinclair's children of a thousand years ago.

Garibaldi, now operating as a private investigator, grew tired of the cult of personality surrounding Sheridan. In "Racing Mars," he agreed to help a group that claimed to be concerned about Sheridan's personality becoming a danger to the cause.

Tensions on Minbar continued to rise. In "Lines of Communication," the warrior caste began purging major cities of religious and worker caste members. In response, Delenn was asked to enlist the aid of the Drakh, one of the Shadow's servant races, now at large with looted Shadow technology. No bargain was struck.

Garibaldi was offered a job on Mars, and Sheridan devised a plan to deploy the White Star fleet as a police force to protect border areas from raiders and the Drakh, in "Conflicts of Interest." Garibaldi's new employer, a medical-research magnate, came into possession of a substance that allegedly cures a deadly genetic flaw in telepaths.

Delenn and a high-ranking warrior caste member, Neroon, tricked the warrior caste's leader into bringing the civil war to an end in "Moments of Transition," forming a new Grey Council under the majority control of the worker caste. Meanwhile, Bester struck a deal with Lyta, giving her the appearance of rejoining the Psi Corps. Earth forces attacked a convoy of unarmed refugee ships, causing Sheridan to declare war.

Sheridan's forces liberated the colony at Proxima 3 in "No Surrender, No Retreat." Disgusted with Sheridan's guns-blazing approach to unseating Clark, Garibaldi left the station to meet with his new employer on Mars.

Dr. Franklin benefited from "The Exercise of Vital Powers," in this case Lyta's ability to reawaken the frozen Shadow-implanted telepaths. Garibaldi arrived on Mars, where Mr. Edgars, his new employer, convinced him to try to lure Sheridan into a trap.

Garibaldi's trap was sprung, and Sheridan was captured by Clark's forces in "The Face of the Enemy." Edgars revealed his plan: to enslave telepaths by infecting them with a lethal virus. Unfortunately, Bester scanned Garibaldi -- who had all along been acting as Bester's agent, personality altered so he'd be more susceptible to betraying Sheridan -- and discovered the plot. Edgars was promptly murdered and the virus stolen.

Continuing the fight in Sheridan's absence, Ivanova was mortally wounded in "Between the Darkness and the Light." Shortly thereafter, Sheridan was rescued by Franklin, Lyta, and Garibaldi, who submitted to a scan by Lyta to prove he was manipulated by Bester. The League of Non-Aligned Worlds, at the urging of G'Kar and Londo, committed forces to aid Sheridan's fleet.

Using the implanted telepaths' ability to merge with computer systems, Sheridan's forces defeated the defenses of Mars and Earth with few casualties in "Endgame." Clark committed suicide rather than face capture. Marcus used the alien healing device ("The Quality of Mercy") to sacrifice himself to save Ivanova's life.