Preschool stop-frame animation about a young penguin who is always up to mischief. Pingu's companions include his baby sister Pinga, his best friend Robby the Seal and his caring mother and father. Pingu is trying to sleep but Pinga is snoring. He is trying to stop the noise when Pinga suddenly gets up and sleepwalks out of the igloo. He has to follow Pinga and keep her out of trouble as she rambles through people's homes and washing lines, around sharp icicles and over a ravine.