Mole's best friend, the Lumpy-Bumpy Thing, has found a hat. On it there's a label that reads Warning! Do Not Touch! The Lumpy-Bumpy Thing picks up the hat and puts it on his head. But Mole is worried. Quick! Take it off! he cries. It could be dangerous! Suddenly, a bunny hops out of the hat, and then another, and another! Soon, there are too many bunnies to count! What can Mole and the Lumpy-Bumpy Thing do now?