Delenn, Ivanova and Lyta take a dangerous trip to Z'Ha'Dum in search of Sheridan, as the fragile new alliance begins to falter. G'Kar goes in search of Mr. Garibaldi, and Londo learns that the Centauri emperor has made a deal with the Devil.
G'Kar attempts to elude capture by the Centauri, while Delenn rallies the Rangers for a final strike against the Shadows. Sheridan contemplates the purpose of his life.
With Sheridan believed to be dead, the fragile alliance against the Shadows begins to fall apart. Garibaldi is found, and the Vorlons begin moving against any world touched by the Shadows.
Sheridan moves against the new Vorlon ambassador as the Vorlon fleet continues down its path of mass destruction. Mollari learns how mad Emperor Cartagia truly is.
Londo and Vir make their move against the Centauri emperor, as the Shadows reveal a terrifying new weapon. Ivanova and Lorien go in search of more First Ones, and Sheridan and Delenn try to lure the Shadows and Vorlons into a final confrontation.
Sheridan, Delenn and the new alliance orchestrate a final confrontation with the Shadows and the Vorlons. Londo concludes his relationship with Morden.
Bester arrives with information that could benefit the station, but only if they act quickly. The crew investigates Z'Ha'Dum. Garibaldi makes a suspicious career move.
A reporter from ISN convinces Sheridan and Delenn to participate in a story on Babylon 5, though his true motives become clear when the slanderous piece airs.
Delenn is required to undergo a Minbari ritual when her clan learns of her intention to marry a human, forcing her to come to terms with her role in the Earth-Minbari War. Franklin and Marcus are sent on an undercover mission to Mars.
Franklin and Marcus meet in secret with the Mars Resistance, who find that they have fallen victim to a spy in their ranks. Sheridan confronts Garibaldi about his disloyalty.
Delenn investigates attacks on Minbari allies, and comes face-to-face with a dark new enemy. Marcus and Franklin try to persuade the Mars Resistance to agree to Sheridan's plan to overthrow Clark's regime.
Garibaldi is solicited by a wealthy businessman from Mars -- the husband of his former lover -- and offered a lucrative job. Ivanova prepares for the first broadcast of the Voice of the Resistance.
Delenn allies with a member of the Warrior Caste to try and stop a civil war. Sheridan devises a scheme to convince the League of Non-aligned Worlds to accept his defense plan.
When the Religious Caste is forced to surrender, Delenn offers herself as a sacrifice in order to bring an end to the Minbari civil war. Lyta receives a troubling offer from the Psi-Corp.
Sheridan and his allies begin their march toward Earth by attempting to liberate Proxima 3, set on removing President Clark from power. Mollari attempts to gain G'Kar's support for the effort.
While Sheridan's journey to Earth continues, Garibaldi travels to Mars to meet his new employer. Franklin attempts once again to free a group of telepaths from Shadow implants.
Sheridan's fleet continues to find new allies. Garibaldi convinces the captain to meet him on Mars, and hands him over to Clark's forces -- but finds his own worst enemy waiting for him.
Ivanova and the assault fleet rush to intercept a new class of Earthforce destroyers. Garibaldi locates the Mars Resistance, and launches a plan to free Captain Sheridan.
In the wake of Earth's civil war, Sheridan turns himself over to have his fate decided by Earthgov. Delenn, Londo and G'Kar act to form a new Interstellar Alliance.
