Every year the little town of Yellowtooth celebrates the New Year with a Blueberry Muffin Festival. But every year, the festivities come under a shadow cast by Irving and Muktuk, two polar bears whose badness is equaled only by their thick-headedness.

These bears are muffin-pilferers of the worst kind. Therefore, they have to contend with Officer Bunny, who is the law in Yellowtooth. Officer Bunny is wise in the ways of the North, and knows how to protect a muffin. As the years go by, Irving and Muktuk's muffin-getting schemes turn more and more devious, keeping Officer Bunny on his toes as he tries to figure out what to do with the crafty though dimwitted bears once and for all.