When Fly Guy snacks from a radioactive trash can, he grows until he is fifty feet tall--and Buzz has to find out a way to counteract the effect before the army attacks his pet.

"Mo is the youngest kid on the Robins football team. The kids on the rival team tease him for being a 'butterfingers' who's too tiny to catch the ball. But Mo's coach has a plan up his sleeve to turn Mo's little size into a big win for the Robins"--

Hazel and Wally want to be big and tall so they start rolling, picking up mud and goo that makes them seem bigger but leads to a series of problems they can avoid only if they keep rolling.