The heroine of the film is an ordinary employee named Koharu who works in the city hall. However, she encountered great misfortune in one night. Her grandfather fell ill and was sent to the hospital, her father was taken to the police station for drunk driving, and her house caught fire and burned down. When the police were investigating the situation, Koharu found that her lover had cheated on her colleague... She lost everything in one night. In front of such Koharu, a doctor named Daigo with an eight-year-old daughter appeared. He proposed to Koharu like a prince, and brought Koharu from the bottom of misfortune to the peak of happiness. However, one day, Koharu triggered an unprecedented vicious incident...