Sonny, a mobster's bulldog, swallow's the master's precious ring and runs away. With two bird-brain henchmen on his tail, Sonny finds a new home in the suburbs with the Franks family. Twelve-year-old Josh and his mom thinks Sonny is super cool and super smart, but his stressed-out dad Brian, wants to get rid of him. Brian has a change of heart when Sonny is dog napped and he realizes how much Sonny means to his heartbroken family.