In the aftermath of the explosion on Z'ha'dum, Sheridan is presumed dead and Garibaldi is missing. Delenn struggles to keep the alliance against the Shadows together, and Londo takes up his new position on Centauri Prime as security advisor to the emperor.

On Z'ha'dum, Sheridan floats somewhere between life and death. Meanwhile, G'Kar risks imprisonment to try to find Garibaldi.

Ivanova and Marcus take a White Star out to search for more first ones to aid in the war, while Londo tries to convince G'Kar to swallow his pride so Cartagia will find him entertaining. A mysterious spacecraft makes its way towards Babylon 5.

With the Vorlons destroying whole worlds, Babylon 5 is struggling to cope with the refugees. And with one Vorlon aboard, they cannot make a move without them knowing about it, so Sheridan decides to kill him. On Centauri Prime, Cartagia explains to Londo how he will become a god when the Vorlons destroy the planet.

As reports that the Shadows are destroying planets too start to come in, Sheridan prepares for one final showdown with the Shadows and the Vorlons. Meanwhile on Narn, Londo makes everything ready - G'Kar's chains have been weakened and an undetectable weapon has been acquired. Tonight Cartagia must die.

In the hours before the Shadows and the Vorlons meet Sheridan's alliance at Corriana 6, Ivanova and Lorien search the last of the First Ones, and Londo races back to Centauri Prime in hope of removing all Shadow influence before the Vorlon planetkiller arrives.

Bester comes to Babylon 5 with information about President Clark's plans to discredit the station. But it has a price tag attached - he wants them to go to Z'ha'dum to look for any leftover technology that might help revive his lover. Garibaldi resigns his position as security chief.

A team of ISN reporters arrives at the station wanting to do a story about Babylon 5. Sheridan refuses at first, but finally agrees on the theory that at least a small part of their side of the conflict will be shown.

When her clan has doubts about her reason for taking Sheridan as a mate, Delenn is required to go to Minbar to attend "the Dreaming". Sheridan sends Marcus and Franklin to Mars to make contact with the resistance there.

Marcus and Franklin meet their liaison to the Mars resistance, but are greeted at gunpoint by the resistance itself. Meanwhile, Sheridan confronts Garibaldi about his attitude.

Delenn investigates attacks on ships of races allied with the Minbari, and encounters the Drakh for the first time. On Mars, Franklin rallies the resistance leaders to Sheridan's cause.

Garibaldi gets his first assignment from his new employer - helping someone getting on and off the station without having to pass through customs. He is quite surprised at who this person is. Meanwhile, Ivanova makes preparations for the first broadcast of "The Voice of the Resistance".

Sheridan hatches an eccentric plan to convince the League to accept White Star patrols on their borders, while Delenn seeks help from Neroon to end the civil war that has broken out on Minbar.

The warrior caste has surrounded the religious caste's stand in the capital city on Minbar, and demand they surrender or be destroyed. Meanwhile, Bester makes Lyta an offer for her body.

With Clark having killed 10,000 unarmed refugees, Sheridan once again mobilizes for war. The first target is Proxima 3, which is being bombed into submission. At the same time, Londo tries to get G'Kar to partake in a joint Centauri-Narn statement in support of the war against Clark.

As Sheridan's forces continue towards Earth, Garibaldi is finally allowed to meet his employer, William Edgars, face to face on Mars, and is after telepath assisted interrogation finally told what he must do to gain Edgars' complete trust. Meanwhile, Dr. Franklin discovers that Lyta can influence the Shadow modified telepaths.

After arranging for the arrest of Sheridan's father, Garibaldi gives his former commander the news, and urges him to come to Mars to arrange a rescue operation. But Garibaldi drugs Sheridan as soon as he gets there, and hands him over to Clark's forces. Finally, Edgars reveals his plans to Garibaldi.

In a bleak room, an interrogator tries to force Sheridan to admit he was under alien influence and worked to undermine Earth.

Garibaldi is barely able to convince Lyta and Franklin that his recent behavior was caused by Bester, and they organize a rescue for Sheridan. Meanwhile, Ivanova gets word that a trap has been set at the fleet's next rendezvous point by a group of completely new advanced-technology destroyers.

The only obstacle remaining between Sheridan and Earth is a fleet near Mars. With the help of the resistance, Sheridan plans to smuggle Shadow modified telepaths onto the fleet, hopefully disabling it long enough for him to take Earth. Meanwhile, Marcus is determined to find a way to help Ivanova.

Clark is dead and the civil war over, but several issues are unresolved. Ivanova is grief-struck at Marcus death and Lise is missing, and Sheridan must now face the consequences of his actions. He did the right thing - but in the inconvenient way.

Far into the future, someone is archiving video clips pertaining to the fate of Earth and the Interstellar Alliance.

Lochley takes command of Babylon 5 and Byron petitions her for asylum aboard the station. An assassin pledges to kill Sheridan at his inauguration.

Londo collapses from a heart attack, and must battle with his guilt in a dream state. Delenn learns that Lennier is planing to leave Babylon 5 to join the Rangers.

A small world plagued by raiders begs the alliance for help. Garibaldi tries forming an intelligence unit of telepaths.

We see the action from the viewpoint of two maintenance workers as a race of savage aliens attacks the station.

Four rangers come from Minbar with a status report to Delenn, while a Downbelow racketeer decides it's time to get rid of Zack.

Bester arrives at the station to arrest the Downbelow telepaths, and Londo barely escapes an assassination attempt when the ship he was to be aboard explodes.

As more telepaths arrive at the station, the denizens of Downbelow start taking notice. Tensions build until one of the telepaths is assaulted, and the others decide to take revenge - against Byron's wishes. Meanwhile, Franklin tries to find out why the Hyach are hiding part of their medical history.

The Brakiri buy a part of Babylon 5 for a religious ceremony where the dead are supposed to return. Comedians Rebo and Zooty arrive to do a show on the station.

Londo starts to suspect that all is not right on Centauri Prime, when a good friend is murdered. On Babylon 5, Byron tries to force the council to give him and his telepaths a homeworld of their own.

The telepaths have barred themselves inside an area of Downbelow, and their telepathic tricks force Lochley to ask Bester for help. G'Kar finds an old friend locked in a cell in the Centauri palace.

More bloodhound units arrive and the fight with the violent faction of Byron's followers intensifies until the rogues seize Medlab - with Garibaldi and Franklin in it.

It looks like the Alliance will get a break in the investigation of the recent shipping line attacks, when a possible witness may have survived the latest attack and taken refuge on the Drazi homeworld. Garibaldi is sent to find him, but the Intelligence Chief's alcohol problem complicates the mission. G'Kar returns to Babylon 5 to discover that his book has been published, and he is now a revered religious figure.

A telepath murders his roommate and escapes on a ship bound for Babylon 5. Bester is given the job of capturing him, and brings along two PSI Cop interns to show them how he works.

Delenn reassigns Lennier to a Ranger training mission on the border of Centauri space, hoping he can find some proof regarding the Centauri involvement in the shipping line attacks. Vir undergoes some dramatic changes when he learns that he is the new Centauri ambassador to Babylon 5.

Lennier investigates Centauri signals that may be connected to the attacks. Lyta tries to continue Byron's dream of finding a homeworld for telepaths. Lise visits Garibaldi only to discover he's drinking again.

The evidence collected against the Centauri is presented to the council of the Interstellar Alliance, and a boycott against the Centauri is issued. In reaction, the Centauri withdraw from the Alliance and make it clear that they will circumvent the blockade by force if necessary.

Sheridan finally authorizes the White Star fleet to participate in the war. Delenn travels to Minbar to start a Minbari-Earth joint project to build a prototype White Star destroyer class ship. Vir hires Franklin and Lyta to investigate why the Drazi don't return the bodies from destroyed Centauri ships.

As Centauri Prime is being bombarded, the Drakh, the real masters behind the war, reveal themselves to Londo. They force him to go along with their plan to alienate the Centauri from the Alliance, and use what's left as their new home.

Earth Force orders the arrest of Lyta for financing terrorism against the PSI Corps. Sheridan confronts Garibaldi about his drinking. G'Kar struggles with his growing mass of worshippers.

Tessa Holloran, former Number One of the Mars resistance, arrives with a warning for Lise and Michael: an assassin has been hired to kill them. Meanwhile, G'Kar gets ready to leave, though not everybody is happy about it.

It is near the end of 2262, and many changes are abound. Londo, G'Kar and Garibaldi have already left, and Franklin will be taking up his new position on Earth shortly. Finally, Sheridan and Delenn leave for Minbar, where the Alliance's recently finished headquarters are located.

Twenty years after his death and resurrection at Z'ha'dum, Sheridan feels his life force ebbing away, and invites some old friends for a final gathering.