Once upon a time, in the Canadian Great North, lived a mischievous and carefree young beaver named White Tuft. His family included Mother Beaver and Little Sister and among his friends were Lil' Lynx and Bear Cub. One dreadful day, the dam that is White Tuft's family shelter collapses. Dragged away by the river's strong current, White Tuft ends up lost, far from his home and family. Alone and inexperienced, he discovers a hostile forest and finds himself at the mercy of frightening enemies. Terrified and hungry, he attempts to make friends with an old and grumpy lone beaver, with whom he will brave every danger. Will our two heroes manage to get the youngster back home, to Mother Beaver and Little Sister, experiencing all sorts of adventures along the way?