Early in the morning, professional golfer Banno Tengo tells his girlfriend Kurumi he wants to break up, so Kurumi demands 100 million yen in damages. The two of them decide to discuss things that night. That night, while at Wakasa-sensei's apartment, Conan and friends hear loud music coming from the apartment next door. They go to Banno's room to complain, where they discover him and Kurumi on the floor. Banno is only unconscious, but Kurumi is dead. Banno claims he was attacked by a woman with white hands. Conan and his friends saw the same woman, but...