When officer Kento Saegusa (Kentaro Sakaguchi) picks up a dusty old police radio that's about to be scrapped, it brings him into contact with Takeshi Oyama (Kazuki Kitamura), a hot-blooded detective from the past. The two detectives, one from the past and one from the present, have worked together to solve countless cold cases. Now, they're back together once more!
