Your name is Bob Reynolds. You know you were once a super hero. You were the Sentry. But then something terrible happened, something that caused the leader of the Fantastic Four to betray you. And now it's happening again, and the Sentry must return.

On the edge of alcoholism and a failed marriage, Bob Reynolds wakes up to discover his true nature. A forgotten hero, he must unravel the conspiracy to erase his memory from mankind before an evil entity returns.

Contains material originally published in magazine form as Sentry #1-5; Sentry: Fantastic Four, X-men, Spider-man, Hulk; and Sentry vs. The Void.