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.
Ivanova and Marcus scout ahead in the White Star for the Shadows' next target, while Sheridan's fleet stands by in hyperspace, ready to launch a massive counterattack. At the same time, Franklin finally has to face his personal demons as he lies gravely wounded in Downbelow.
An Earthforce investigator comes to Babylon 5 with Lt. Keffer's last recording, asking the ambassadors if they recognize the ship in it. Meanwhile, Londo takes steps to remove himself from the Shadows, and Sheridan takes the White Star out for its first mission.
Marcus starts snooping around Downbelow when some of his contacts start behaving unusually and a lurker is found dead with a strange creature bonded to his spine. Ivanova investigates Corwin's loyalties when he receives a promotion.