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.

One day, his girlfriend Saki, who is in coma by a car accident, appears in front of Haruyuki. Saki says she was given a week and makes a box lunch for Haruyuki as she used to always do. Since then, every single day becomes special for him.

From a first feature director Koichiro Oyama who worked as an assistant director for Hideo Nakata's "Kaidan" (2007), the film is about a man with crime records living with his own son without knowing their real relationship. Starring Ikkei Watanabe "Suspect X", the film won Yubari International Fantastic Film Festival's Audience Award, whose last year's winner was a smash hit zombie film "One Cut of the Dead".