The Schmuzzies are throwing a "Schmirthday Schmarty" and invite Puppet and Mrs. Foil. Puppet gives invitations to David, Shane, and the viewers as well. With no directions on their invitations, the brothers try to figure out where the party is being held. They search in the No-Fun Room, where Mrs. Foil tells them no celebrations are allowed. They look in the Surprise Room, where there are surprises behind every door but no parties. David and Shane follow a "Happy Birthday" singer to the Opera Room, but it turns out that it is just an opera about a birthday. The brothers return to their apartment, only to discover that the party is for them.