The object of the game is to be ready with the right set of cards to meet the Fonz at the door. Spinning the spinner allows you to draw cards, swap a card with another player, or check the door. When you check the door, you open it and see if you have the correct set of three cards that match the Fonz's activity. If the Nerd is behind the door, you lose your set of three cards. - BoardGameGeek