Rory Rooney likes to be prepared for anything, but when he inexplicably turns green and finds himself in an experimental hospital ward with his nemesis, school bully Tommy-Lee "Grim" Komissky, everyone is baffled but Rory believes he and Grim have become superheroes.

Rory isn't prepared when he suddenly and inexplicably turns green and finds himself stuck in an experimental hospital ward. The doctors are just as baffled as Rory is, and that's when he begins to wonder: What if this isn₂t caused by his genes, or a virus, or something he ate? What if it₂s something even more extraordinary? After all, more than a few superheroes₂ careers began when they turned green.