Luke is a young boy who lives with his family in Northern Canada. One day he finds a bear cub in his garage, unintentionally abandoned by its mother. He quickly develops a warm relationship with the little cub and sets out to reunite it with its parent. To undertake this perilous journey, Luke seeks the help of Muktuk, an Inuit who knows polar bear territory. But when an iceberg separates them from their guide, Luke and his little friend must face the dangers of nature on their own.