Hedgehog lives on a teeny-tiny island with only her stuffed dog, Mutty, for company. When a great storm carries Mutty away, she embarks on a quest to find her friend. Following the trail of clues Mutty left behind, brave Hedgehog meets a wiggly Mole, a wordy Owl, a curmudgeonly Beaver, a scatterbrained Hen and Chicks, and a girl who's new to the neighborhood, Annika May. With bravery and teamwork, there's nothing that can stop these seven from finding Mutty, but along the way they discover something even more important: each other.