After a prank goes particularly wrong, Dennis needs to find a way to pay for the damage. The menaces offer a car wash, but Beanotown's cars just aren't that dirty.
Dennis and his faithful hound Gnasher are out to make every day as much fun as possible, but their adventures often lead them into trouble. After a prank goes particularly wrong (or should that be right?), Dennis needs to find a way to pay for the damage. The menaces reason that the best way to raise funds is to offer a service everybody needs, a car wash. Sadly, Beanotown's cars just aren't that dirty - but where there's a menace, there's always a way. Realising the natural enemy to a clean car is an indiscriminate bird, the gang menace up a remote-controlled airborne pooping system, but the fake poop soon hits the fan when the Colonel, a keen ornithologist, decides he has to capture it.