Walter's family is holding a yard sale, but there are few customers. Walter, fartingcontentedly near Father, wonders why. When a man offers ten dollars for Walter, Father readily agrees. Walter wonders why. Walter is sad to leave his family behind, but relieved to discover that his new owner is a clown. Walter figures he will help the clown bring joy to children on their birthdays. But the clown has a dastardly plot: he will use Walter's gas to inflate balloons and then pop them to stun guards during bank robberies. Will Walter turn to the dark side? Of course t! He comes out a hero and is reunited with his family by doing what he does best.