 Fred wants a second car for the family and attend the police "car auction" to purchase one. However, he has an eye for a car which used to belong to a gangster. A shady man tried to get the car, but Fred glues his mouth to win the bid. He soon learns the hard way that a mob boss wanted the car, as he was told they are diamonds hidden in it. The gangsters pursue Fred, Barney and Dino to their hideout...