Minako (Yuko Tanaka), begins her day running up and down the hills of her hometown delivering milk door to door. When that's done, she heads to her day job as a supermarket cashier. Minako is 50 and single. In one of the houses to which she delivers milk is a man with whom she has secretly been in love since high school. The man, Keita (Ittoku Kishibe), lives with his wife Yoko, who is terminally ill. Caring for her at home, he works in the children's affairs section of the local municipal office. Though he insists that he wants nothing more than an "ordinary" existence, his life is in turmoil below the surface. The director uses a variety of narrative devises to portray the loneliness, isolation, and hope of these people who have seemingly allowed their goals and dreams to slip away, whilst keeping them agonizingly close to hand.

After having narrowly escaped an attempt on his life at the hands of a psychopath, detective inspector Takakura quits active service in the police force and takes up a position as a university lecturer in criminal psychology. But his desire to get to the bottom of criminals’ motives remains, and he does not hesitate long when former colleague Nogami asks him to reopen an old case.