Oshii Takashi is a detective with excellent reasoning power. Unfortunately, he usually misses the criminal in front of him and other detectives get recognition for the capture. He is transferred to the Utobashi Police Station. Oshii Takashi goes to a record company CEO's house. The CEO's third son was burned to death. The police are set to conclude that his death was an accident, but Oshii Takashi thinks otherwise. Oshii Takashi begins to investigate.