The Munsters are invited to a masquerade dance party to meet the family of Marilyn's beau. Lily is offended by Herman's costume and leaves.

When Marilyn seems unable to keep a boyfriend, Grandpa creates a love potion to help her. However, the potion ends up affecting the wrong people.

Herman goes on a late-night stroll and is mistaken for a thief who has been bag snatching in the local park.

Herman and Grandpa overhear Lily and Marilyn talking and think Lily is pregnant, but in truth, it is Dr Dudley's son, Elmer, who comes to spend a few days with the Monsters while Dr Dudley and his wife are on vacation.

A gas company commissioner gets more than he bargained for when he tries to install a pipeline under the Munsters' house.

Herman embarks on a crash diet after he is invited to an Army reunion and discovers he can't squeeze into his uniform.