Collected for the first time, an early classic from the ALL-STAR SUPERMAN team of Grant Morrison and Frank Quitely, newly recolored. Once he was Hero of the Beach… and of the Doom Patrol. Now Flex Mentallo, the Man of Muscle Mystery, returns to investigate the sinister dealings of his former comrade, The Fact, and a mysterious rock star whose connection to Flex may hold the key to saving them both. This fast-paced tale twists super hero tropes, introducing one mind-boggling concept after another in a tour de force of innovative storytelling.