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. When Father uses a shovel to get the snow off his snowcart, Pingu decides to try out a bit of digging for himself. Soon he and Robby are tunnelling around the neighbourhood and things start sinking into the snow in their wake.