On the night of a meteor shower, Mrs. Cartman goes to Mr. Mackey's party, leaving Cartman in the care of Stan's 12 year old sister, Shelley, who is incredibly violent. While babysitting, she invites her 22-year-old boyfriend, Skyler, over, who in turn invites his band, The Lords of the Underworld. Cartman, dressed up as Will Smith's version of Jim West from Wild Wild West, is in his room, trying to get a letter to his mom by sending out his cat, Kitty. Kitty, however, is in heat, and goes out in search of a tom. After an unsuccessful attempt with an overweight tom, she winds up seducing a large group of cats, and invites them back to Cartman's house and cracks open catnip.