Naomi is a university student who is leaving for the US to study in a week; Shuichi is a washed-up gumshoe who's hired by Naomi's father to bodygard his daughter until she leaves. Shuichi finds the job annoying and wants to quit. But he also has a screwed-up ex and alimony to pay. Things go from bad to worse when Naomi and Shuichi stumble upon a murder which might involve the yakuza. They decide to find out who committed the murder but God knows what it will lead to.
Unfortunately the movie Detective Story is not yet available on Paramount Plus.
| Directing | Kichitaro Negishi | Director |
| Writing | Jirô Akagawa | Novel |
| Production | Mitsuru Kurosawa | Producer |
| Editing | Akira Suzuki | Editor |
| Camera | Seizô Sengen | Director of Photography |
| Production | Haruki Kadokawa | Executive Producer |
| Sound | Kazuhiko Kato | Original Music Composer |
| Art | Hiroshi Tokuda | Art Direction |
| Sound | Fumio Hashimoto | Sound Recordist |
| Writing | Toshio Kamata | Screenplay |
| Lighting | Mitsuo Watanabe | Lighting Technician |
