This drama is adapted from the comics of the same name of the same name, telling the father of the former policeman Yamashita Haruki (Nakagawa YayeJie) was killed on Ping An Night, and his daughter Yamashita Mai (Hirose SuzukiJi) The story of human crime with the letter left by his father as a clue trace the truth.The letter left by his father wrote a“of injustice”.When approaching the truth of the incident, now with the two events in the past, it is intricately intertwined ..