Late 18th century, Tohoku. In a village suffering from food shortages due to cold weather, Rin lives a strong life despite being looked down upon by the people. Her soul's salvation was Mt. Hayachine, where the goddess of thieves is said to dwell. One day, Rin's father, Ihei, who could not bear her hunger, committed theft. In order to protect her home, Rin voluntarily leaves the village to protect her father who is being blamed by the villagers. Rin crosses the mountain god's shrine, which she is told never to cross, and heads deep into the mountain. As Rin runs away from her wolves, what appears in front of her is a "mountain man" who is feared as a legendary being.