[Machine Translation] Shinichi Mizuta has two lovers. One is Reiko, the daughter of the company president and a flamboyant woman, and the other is Hiromi, a simple woman who takes care of her sick mother. One day, however, Reiko is found dead in her car. Her death was thought to be an accident, but there were marks on her neck where someone had strangled her. What happened to them? Shinichi and Tadao set out to solve the case, but now a mysterious assassin appears who is after them... A masterpiece mystery!