It's Ricky Ricotta's birthday, and as a special treat, his parents are taking him and his Mighty Robot to see dinosaurs at the museum. Too bad they've also invited Ricky's little cousin Lucy — she's a real pest!
Ricky Ricotta and his Mighty Robot are in big trouble. After crashing the Ricotta family mini-van while using it as a skateboard (it's the only thing big enough for the Robot), they have to earn some money fast to pay for the repairs.
Ricky Ricotta is a very nice mouse, but every day, the neighborhood bullies in Squeakyville pick on him. Sometimes he feels so alone! He doesn't have brothers or sisters, and he wishes he had a pet or a special friend — especially on his way to school, when the bullies throw his backpack into the garbage.