The final battle for the galaxy has begun, and more is at stake than ever before. On Centauri Prime, Lando finds himself in a desperate race against the clock, fighting to cleanse his homeworld of every last vestige of Shadow influence. His mission: avert the total annihilation of his species by the unforgiving Vorlons. Will his efforts be enough, or will he inadvertently seal the doom of the Centauri?

Across the cosmos, Sheridan, Delenn, and the beleaguered Alliance of Worlds fight a desperate, impossible war, striving to simply be heard by the ancient warring powers. But when they finally capture the attention of the Vorlons and Shadows, the consequences are catastrophic: Sheridan and Delenn are pulled into a direct, mind-bending confrontation – a telepathic battle of ideals that threatens to consume them both. Can Babylon 5 survive this final, impossible challenge, or will the galaxy succumb to pure, unyielding extremism?