Secret Reunion
의형제 (original)
Six years ago a mysterious shooting takes place in Seoul. The after effects of the shooting results in Han-kyu Lee (Song Kang-Ho) losing his job at the NIS (National Intelligence Service). Six years later, Ji-won Song (Kang Dong-Won), an ex North Korean spy. Now operates somewhere in the Seoul metropolitan area. As these two men hide their identities and work their particular angles, trouble brews again...
Starring Song Kang-ho, Gang Dong-won, Jeon Kuk-hwan, Park Hyuk-kwon, Yoon Hee-seok, Choi Jung-woo, Kwon Bum-taek, Jeong In-gi, Jo Hyun-wu, Cha Yup
It's a drama and thriller movie, and has a rating of 6.9 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Australia.