Eddie wants to quit school because all the kids there call him Shorty. Grandpa helps by fixing a potion to make Eddie grow six inches overnight. Instead, the potion causes the young Munster to grow a full beard and mustache.

A 300-pound safe drops on Herman’s head, causing him to develop amnesia. In order to get him released into her custody, Lily petitions the court to adopt Herman as her son. Until he restores his memory, he is treated as Eddie’s brother John.

Herman is struck in the head by a bolt of lightning from one of Grandpa’s experiments. It causes him to become so disfigured that he ends up resembling officer Francis Muldoon from CAR 54, WHERE ARE YOU? (or how Fred Gwynne looks without makeup). Lily hopes to restore Herman’s old face with plastic surgery.

Eddie gives Marilyn a ring he found in the attic as a birthday present. Grandpa recognizes it as the Fregosi Emerald, a centuries-old ring with a Transylvanian curse. Herman doesn’t believe in such a silly superstition; he is intent on proving that the ring does not bring about bad luck. He quickly regrets trying to do this.