Penguin Island is home to a rare population of penguins, separated from the mainland by a narrow strip of land. Trouble is, that strip of land is exposed during low tide, and a pack of foxes has discovered it! When twelve-year-old Addie realizes how vulnerable the penguins are, she decides to act with her faithful sheepdog, Max, by her side. But protecting a colony of penguins isn’t easy: Darwin, a young and proud penguin, doesn’t want Max’s help, and the two can’t see eye to eye. Will they be able to compromise and work together to save the colony?