After divorcing her husband, Rie (Sakura Ando) returns to her hometown and marries a reserved young man named Daisuke (Masataka Kubota).
They find their modest happiness together until one day, Daisuke tragically dies in an accident.
One year later, Daisuke’s brother, Kyoichi (Hidekazu Mashima), appears on the first anniversary of his death.
However, seeing Daisuke’s photograph, a shocking truth emerges. The man whom Rie married wasn’t “Daisuke” but somebody else. Who was the husband Rie loved and had a family with?
In her quest to uncover this man’s true identity, Rie contacts lawyer Kido (Satoshi Tsumabuki) to find out who he actually was and why he became somebody else.
As Kido investigates, he confronts various social issues prevalent in Japan, and the fake Daisuke’s shocking past is revealed.