One fine morning, Superman and Bizzaro wake up in each others bodies. Confusion ensues, with Clark Kent(Bizzaro) breaking out of his apartment much to Lois' surprise. Elsewhere, Bizzaro(Superman) flies up from the Graveyard of Solitude and breaks into the Justice League's base on the Moon.He gets attacked by his teammates, who don't recognize him. Jo'nn Jo'nnz helps him out.
Superman returns to Earth, only to find Bizzaro making a ruckus inside The Daily Planet. A fight ensues, with Superman confronting General Zod inside Bizzaro's dreams. They both return to their own bodies.
The Martian Manhunter appears as Superman and has a quick conversation with Clark.
At the end, it is revealed that Manchester Black is the mastermind beind all the bizzare events taking place that day.