The Addams family take care of an injured motorcyclist named Rockland "Rocky" Cartwright III (Tom Lowell). The family is captivated by Rocky and his beatnik way of speaking. He, on the other hand, is trying to get a part for his bike so he can leave. After his bike is fixed, he is about to leave when he sees his domineering tycoon father (Barry Kelley) coming to the house. The children tell the father that they haven't seen Rocky. Gomez and Morticia find out it's Rocky's birthday and decide to have a surprise party for him. They call Rocky's father and invite him. At the party, the father insists that Rocky leave this "house full of kooks". Rocky tells his d ...