Garfield Logan awakes after being tranqed by Dr. Register, a man who has been transformed into "The Changeling" through his own greed to figure out how to create the side-effect that cause Beast Boy's powers to manifest. Register needs a cure, and he needs it from Gar. However, Cyborg stops him before he can get far. In order to put an end to Register's madness, Gar reinfects himself with the virus and becomes Beast Boy once again. He paralyzes the doctor using spider venom and using his blood they come up with an innoculation against the virus, saving the lives of hundreds of kids.
As a prologue, Tim returns to being Robin and a Superboy from the future goes back in time for an unknown reason.