The Mobile Investigative Unit (known as "MIU") of the Tokyo Metropolitan Police Department attempts to solve cases within 24 hours. Detective Kazumi Shima is selected as a new member of MIU. He is intelligent, with excellent observation and communication skills. Yet, he does not trust other people. He is unable to find a partner in MIU and is ordered to partner with Police Officer Ai Ibuki, who works at a police substation. Ibuki applied for MIU, but he failed. He is in excellent physical condition, but he lacks knowledge and experience as a detective. Shima learns about Ibuki's background and he becomes more nervous. Finally, Shima has his first meeting with Ibuki.
You can now watch MIU404 online on the following streaming providers in the United States.
| Production | Junko Arai | Producer |
| Directing | Ayuko Tsukahara | Director |
| Writing | Akiko Nogi | Screenplay |
| Sound | Kenshi Yonezu | Theme Song Performance |
| Sound | Masafumi Watanabe | Foley Artist |
| Sound | Masahiro Tokuda | Music |
| Directing | Kentarō Takemura | Director |
| Directing | Naoki Katō | Director |
