As an alien warship approaches Earth, the world still doesn't know which-if any-of the four replacement Supermen is the real Man of Steel. Each has a claim to the title, but two show their true colors when they battle the others for supremacy. Meanwhile, the true Superman-restored by a Kryptonian regeneration matrix-is plotting his return! This new title collects ACTION COMICS #689-692, ACTION COMICS ANNUAL #5, ADVENTURES OF SUPERMAN #503-505, ADVENTURES OF SUPERMAN ANNUAL #5, GREEN LANTERN #46, SUPERMAN #80-83 and SUPERMAN: THE MAN OF STEEL #24-26!