Alder Grove is in trouble. Signs are pointing to a winter of disease, hunger, and death for the snowshoe hares who live there. Bramble, a young hare, is sent on a journey that could hold the key to the community's survival. He and his friend Kas must find their way to Hare island over the rugged landscape that fronts Cape Breton's Bras D'Or Lakes. Facing danger at every turn and a hostile reception on Hare Island, they struggle to complete their task. Only courage, determination, and help from some surprising allies will insure that they can bring aid back to Alder Grove.