To celebrate Valentine's Day, Homer takes Marge to the Tunnel of Love at a carnival. But when Bart pulls a prank involving some Jell-O, they become hopelessly stranded. Homer tries to cheer Marge up by recounting some of the greatest love stories of all time, beginning with Bonnie and Clyde (as Marge and Homer) who steal each others' hearts as they rob their town dry. Next, Marge tells the story of two dogs, Sadie (Marge) and Scamp (Homer), in her take on "Lady and the Tramp." Lastly, Bart spins the final romantic tale in his recounting of the rock-and-roll romance of the The Sex Pistols when Nancy Spungeon (Lisa) falls for the rebellious Sid Vicious (Nelson).