Kim Seong-jong

Old friends Yoon-soo, Jong-gyoo, and Jin-gyoo reunite after a long time and share drinks while catching up on each other's lives. Yoon-soo, who is married to Ji-soo, confides that he's been struggling with issues in his sex life with his wife. Jin-gyoo reveals that he broke up with his girlfriend, Mi-kyeong, because their sexual desires didn't align, and he now satisfies his needs at karaoke bars, massage parlors, and similar venues. As the three friends get tipsy, they decide to have a wild night at a room salon. Thanks to the tips he picks up there, Yoon-soo is able to improve his marital sex life. Encouraged by this, his friends begin visiting room salons more frequently.

Based on a true story and a legendary Korean novel, this movie follows Detective Oh (superstar Lee Jung Jae) and his investigation into the mysterious murder of a North Korean. His investigation leads him to a diary, which was written by a nun who - along with her boyfriend - helped lead the escape of North Korean POWs held captive during the Korean War. Detective Oh eventually becomes emotionally involved with the case and pursues the writer of the diary and her long-lost boyfriend, hoping to crack the case and learn more about the story of the POWs.

Detective Oh goes searching for the murderer of Yang, a small-time brewer bludgeoned to death by a quiet riverside with no witnesses, no apparent motive. As he wanders about the winter landscape of South Jeolla Province and Seoul, he finds himself caught in a story of treachery, rape and murder.