When a mechanical menace attacks Metropolis, Superman learns it was created by the Mechanic. Turns out the alien has a price on his head and needs the Man of Steel's help. The legendary intergalactic bounty hunter, Lobo, is hot on the Mechanic's tail and will stop at nothing to capture him. Can Superman put a lid on Lobo and save the Mechanic from whomever wants him bagged? Find out in this action-packed chapter book for DC Super Hero fans!