The Powerpuff Girls' inter-dimesional search for Dexter's mutated sister Dee Dee has brought them to the doorstep of Courage the Cowardly Dog! But when they are mistaken for dog sitters, the Girls find themselves thrust into the disturbing nightmare that is Courage's life. Plus, a Foster's Home for Imaginary Friends story-Bloo starts a "Small Club" while Wilt starts a "Tall Club" in response...