The story of a man and a wolf-dog in East Siberia during the early 1900s.

Following the brutal rape and murder of his teenage daughter, a single father seeks revenge against the responsible youths. His pursuit for justice becomes a deadly cat-and-mouse game with both the perpetrators and the police.

A high-school girl, Etsuko, just spends her days without any aims or purpose, until one day, Riina, a transfer student, asks her help to set up a boat club. Although Etsuko reluctantly accepts after hearing Riina speak passionately about her dream, she gradually starts to embrace the club after spending time with her teammates.

Teacher Kawashima Haru takes a position on a remote island off the coast of Hokkaido, where she takes charge of six students. However, she is later forced to leave after an accident occurs. 20 years later, Haru learns that one of her former students has committed a crime, and eventually returns to the island once more.