En la frontera de Hokkaidō, un veterano de guerra y una chica de la tribu ainu compiten contra marginales y militares para encontrar un tesoro cuyo mapa está tatuado en prófugos.

A coming of age tale about Kanto, a 14 year old boy, and a descendant of Japan's indigenous Ainu people, who struggles to come to terms with the recent loss of his father. One day, he learns about the small hole in the cliff in nearby forest that Ainu people considered a path to the other side of the world - where dead people live. Kanto decides to visit the hole, hoping to see his deceased father.