Fonzie is sleeping on the couch as a doctor tells Howard and Marion that Fonzie has to go to the hospital the next day to have his tonsils taken out. The doctor leaves. Fonzie doesn't want to go to the hospital but Marion demands that he go. At the hospital, Fonzie wears a sterile gown as Richie talks to him. Fonzie has to stay in a room with children as it is the only one available. The nurse leaves the room after telling Fonzie he'll have his tonsils removed first thing in the morning. The kids in the room and Fonzie play Tiddlywinks. Ralph comes in dressed as a cowboy, and Potsie is dressed as the devil. They wanted to show Fonzie their costumes for the Halloween party. The kids go downstairs to see a clown. Ralph and Potsie listen to Fonzie moan about not being able to go to the party. Fonzie says he wanted to go to the party as The Lone Ranger with his girl, Sophia. At the house, Richie and Howard are downstairs in costumes borrowed from the college theatre department for the Halloween party. Howard is dressed as King Henry VIII holding with a turkey leg. A girl comes to the house trick-or-treating in pajamas (a middle-class housewife) and takes Howard's turkey leg. Joanie is dressed as Snow White, and Richie is Cyranno de Bergerac. Al comes in as a ghost and Chachi as Prince Charming. Joanie and Chachi leave as they will be going with Jenny Piccalo and her parents. Marion is dressed as Ann Boleyn. Fonzie comes in after leaving the hospital, and the kids have followed him to the house. Howard and Marion bring the children back to the hospital. After Richie convinces him to go back, Fonzie takes the kids (Patrick, Russell, and Allison) trick-or-treating throughout the hospital. They meet on Allison's bed, and Fonzie tells a ghost story.