Tamura Shin is a young man who has been pursuing the mystery of the murder that his father, a police officer, caused and changed the fate of their family. Ever since his father’s arrest, Shin and his mother have been criticised by the public and had to live in hiding. One day, Shin is told by his beloved wife to try and give his father the benefit of the doubt, and he decides to meet his father who is in prison. However, when he heads to the old crime scene, he is shrouded by a sudden mist and ends up going back in time to the past. Shin finds himself in the year 1989 – right before the murder took place. The crime scene has become a snowy village. At this village, Shin sees the warm smiling faces of his own face. If he stops his father’s case, he will not lose his family. This spurs him to challenge the taboo of changing the past.