Some naughty mice who dance rock 'n roll decide to make a raid. The cat who has to guard a field of corn has dozed off and an army of mice manages to break into his realm. While cats learn to know mice by looking at the pictures of them, the real mice make a clean job in the field. The cats will have to go on a hunt for mice. But having feasted on valerian they fall asleep on their hunt and the mice harness them in front of a mousetrap and get a good ride.