Black Rain (1989) on Netflix

When a member of the Japanese Yakuza is arrested in New York, detectives Nick Conklin and Charlie Vincent are assigned to escort him to Japan. Conklin in particular is none too pleased that they are not prosecuting the prisoner themselves. They no sooner arrive in Japan however than they are duped and turn their prisoner over to gangsters posing as police. The detectives stay on in Japan hoping to work with their Japanese counterparts but have some difficulty dealing with local protocol and customs. Over time, Conklin develops a working relationship with Detective Masahiro and together they manage to ensure justice is served.