Shuichi Tsujiyama (Takumi Saito) is a broke private investigator. While on a job assignment, he is about to catch a crucial moment by taking a picture, but Naomi Arai (Fumi Nikaido) misunderstands the situation. Shuichi Tsujiyama and Naomi Arai struggle physically. Because of this, Shuichi Tsujiyama misses his crucial photo opportunity. Kimie Hasenuma (Mari Natsuki) is a housekeeper who has been employed by Naomi Arai for many years. Kimie Hasenuma asks Shuichi Tsujiyama to be Naomi Arai’s bodyguard.
Unfortunately the movie Detective Story is not yet available on HBO Max.
| Writing | Jirô Akagawa | Original Story |
| Writing | Tsutomu Kuroiwa | Screenplay |
| Directing | Masaya Kakehi | Director |
| Sound | Tomohide Harada | Original Music Composer |
| Camera | Susumu Wada | Director of Photography |
| Sound | Mitsuaki Sekine | Sound Recordist |
| Editing | Shinji Kawamura | Editor |
