The Simpsons (1989): Season 24, Episode 11

24 - 11: The Changing of the Guardian

After surviving a tornado, Marge and Homer seek out guardians for the kids, in case the worst should happen. They first turn to friends and family, including Homer's half-brother, Herb Powell with whom to entrust their kids, but when Bart and Lisa fall in love with a super-cool couple, Mav and Portia, Marge starts to question their potential guardians' true motivations.