Lucy, Ricky, Fred and Ethel reminisce (via flashbacks of previous episodes) as they trim the tree on Christmas Eve. The flashbacks were all from season 2, include Lucy telling Ricky about her pregnancy in Lucy Is Enceinte, Lucy, Ricky, Fred and Ethel singing in a barbershop quartet in Lucy's Showbiz Swan Song, and Ricky, Fred and Ethel franctically preparing for Lucy's impending labor in Lucy Goes to the Hospital.

Lucy promises to produce Superman ([[George Reeves]) for Little Ricky's fifth birthday party, but must make alternate plans when he is unable to attend. She hastily tries to impersonate Superman, but gets locked out on the balcony with the pigeons.