Rex, Hollywood's top-grossing canine, 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.

Rex's luck - and Hollywood high life - runs out while shooting a commercial; an aerial stunt goes awry, leading Rex's handlers to presume he's dead. But Rex is merely lost - alone, filthy and unrecognizable in an unfamiliar city. Chased by animal control, he takes refuge in grubby abandoned lofts, a far cry from his former luxurious lifestyle.