The full moon on Leap Day causes strange things to happen: after throwing his back out, Harry begins to act very unusual; a series of odd occurrences leads Barbara to believe that a neighborhood repairman is actually Dreyfuss; Charley cancels a date to stay home and watch The Sound of Music.

After receiving an inheritance, Charley assembles a group of people who have meant a lot to him over the years (which includes Harry, Carol, Sophia, and Don Adams from Get Smart) and takes them all on a trip to Mardi Gras. Laverne's hideous looking cat dies.