Takashi Oshii 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. Takashi Oshii 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 Takashi Oshii thinks otherwise. Takashi Oshii begins to investigate.

The case files of a most unfortunate detective Detective Oshii is brilliant. His flair for seeing through the mystery is unequaled. And yet… at the very last minute, his finger points to the wrong culprit! Always so close to the truth, and yet so far—. While the credit goes to everyone else but him, there never seems to be a shortage of cases for the "great" Detective Oshii!