Kristian and his friends try to catch a noisy critter at the beach, but it keeps escaping. They eventually sell it to a pet store, but it comes back and causes trouble. They prove their innocence and live happily ever after.
Geronimo Stilton, a mouse and newspaper editor, embarks on an adventure to deliver a cake to a prince in Australia. After succeeding, he returns home only to be robbed, but manages to fend off the robbers using karate. He then gets involved in a rescue mission for his friend Wild Willie.