Chilly Willy and his friend the polar bear enjoy playing their own pop tune, “The Mukluk Bop,” at all hours. But in a ship docked nearby, a captain is trying to get some sleep. The captain visits their igloo and demands that the two antarctic rockers stop making noise. They pay no heed to the fuddy-duddy, so he decides to take action. The radio gives him the idea that Hollywood would pay him big money for a new rock group with a gimmick. And what could be a better gimmick than a polar bear that sings and plays the guitar or a penguin that plays the tambourine? The captain attempts to capture the animals, but they put up a better fight than he bargained for.