As the three bears, Toklo, Lusa, and Kallik, begin their journey home, they encounter new friends and dangerous enemies and must decide which they can trust to help them on their quest.Toklo, Kallik, and Lusa survived the perilous mission that brought them together, and now it's time for them to find their way home. When the group reaches a shadowy island covered in mountains and ice, Kallik is sure they're almost back to the Frozen Sea. But a terrifying accident leads them into a maze of abandoned tunnels, unlike anything they've ever seen before. The bears grow desperate for a sign to guide them, and when they meet a cub who has lost his whole family, Toklo believes the cub has been sent by Ujurak.