Kanji Watanabe is a middle-aged man who has worked in the same monotonous bureaucratic position for decades. Learning he has cancer, he starts to look for the meaning of his life.

Two fathers' lives intersect when one of them is involved in a terrible and sudden hit-and-run car accident that leaves the other's son dead. In response, the two men react in unexpected ways as a reckoning looms in the near future.