Mary Ellen goes into labor, and gives birth to her and Wally's son, Kevin.
Wally's baby nurse is hired to care for infant Kevin, with disastrous results when she clashes with Mary Ellen.
Kelly plagerizes a poem for a school assignment, and is blackmailed by a girl she doesn't like.
Wally takes the day off work to prove he's a good father, and Beaver chaperones Oliver's field trip to the museum.