Complete story — includes the ending
After helping Superman defeat Mantis, Eiling reactivates Captain Atom's Air Force Reserve commission. Meanwhile, Question discovers the records about the Justice Lords and Luthor's murder by alternate Superman. Question believes that everything that happened in the Justice Lord timeline will happen in their timeline, leading to an eventual Armageddon. He attempts to prevent this by killing Luthor, only to be captured by Luthor and tortured for information by Doctor Moon at Cadmus' base. Superman and Huntress attempt to rescue him where Superman learns of Professor Hamilton's involvement with Cadmus the day when Superman threatened him to heal Supergirl. As they escape with Question, they are confronted by Captain Atom, who has orders to stop them.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, List of Justice League Unlimited episodes. HTML formatting and reference markers removed. · Content license