Rex is Hollywood's top-grossing canine. He is known for his extreme athletic abilities and diva-like demeanor. His perks package, rivaling that of any A-list celebrity, includes Kobe beef, a poodle harem, and a diamond collar. Unfortunately an accident that occurs while Rex is shooting a commercial leads his handlers to presume he's dead. But Rex is merely lost - alone, filthy and unrecognisable in an unfamiliar city. Chased by animal control, he takes refuge in grubby abandoned lofts, a far cry from his former luxurious lifestyle.