A friend of Talia comes to Babylon 5 to negotiate a deal to help Mars become more self-sufficient, when a man calling out "Free Mars!" electrocutes him.

Londo gets a visit from an old friend who seeks his help after being called a traitor by the Centarum. Sheridan starts hallucinating after being attacked by a dead alien.

Draal reveals himself to Sheridan, while Refa and Londo set a plan in motion that will lead to the final defeat of the Narns.

The renegade destroyer "Alexander" arrives at Babylon 5 and Sheridan is forced to announce the station's secession from the Earth Alliance, and prepare for an attack by Clark's forces. Meanwhile, Delenn is forced to go to Minbar when the Grey Council refuses to act upon increased Shadow activity.

Delenn prepares for a ceremony of rebirth, the station's computer goes through an interesting change, Londo "encourages" Refa to stop associating with the Shadows, and the remains of the Nightwatch on Babylon 5 plan to strike at Sheridan through Delenn.

A mysterious man comes to Babylon 5 dressed in chainmail and armed with a sword. His name? King Arthur - Son of Uther Pendragon, come to help when he is needed most.

Garibaldi investigates an area where a maintenance worker disappeared and finds a whole floor that was forgotten after construction, including its rather strange inhabitants. Meanwhile, Delenn is about to take on the role of Ranger One, but Neroon swears to stop her.

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.

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.

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.

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.

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.