In Miyazaki Prefecture, a widowed woman Rie Takemoto meets a man called Daisuke Taniguchi, whom they fell in love and soon get married, and have a family filled with happiness, until an accident has taken Daisuke's life. When Rie handles Daisuke's funeral, a Taniguchi relative tells Rie that Daisuke man was not real. Shocked with the incident, Rie employs Akira Kido, a lawyer and her old friend, to set out to investigate her husband's real identity and background together. The more the two reveal pseudo-Daisuke's background, the more shocking truth surfaces beyond their knowledge in the past and tests their relationships with their own beloved ones.