The adventures of Pingu, the clumsy young penguin who is always up to mischief in his snowy world. His companions are his baby sister Pinga, his best friend Robby the seal, his caring mother and his father who is the local postman.
Pingu and Pinga decide to play a joke on Mother by putting Pinga in an old box so she can jump out like a jack-in-the-box. The joke works so well that they decide to play it on more people. But it all goes wrong when Father finds the box, and puts it onto his mail cart for delivery - with Pinga inside. Pingu has to chase after Father to make sure Pinga doesn't get lost in the post!