Mr. Belvedere (1985)

S5E1 Fat Cats

George's boss at the television station tells him he needs to shed 15 pounds, prompting him to check into a weight-loss retreat, and he invites Mr. Belvedere to join him for some fun. However, they quickly struggle to adhere to the strict program. In the meantime, Kevin is tasked with watching his girlfriend's cat, which manages to escape and inadvertently traps Marsha, Heather, and Wesley.