The animated adventures of the clumsy young penguin who feels he's misunderstood. Pingu's classmate has brought a wind-up plane to school, and it really flies when you wind the propeller! Pingu swaps the rubber band for a bigger one so that the plane flies further and it whizzes through the town, causing chaos. Pingu is in trouble! But then he ties the plane to a swing-ball set, and as it flies round and round, it helps his maths teacher to explain circles to the class.