Despite their different family backgrounds, four friends grew up together in the wearisome years of the 70s. But as time goes by, each of them takes a different life path.

Hyeok-bin was once a superstar but a scandal led to the fall of his popularity. Hyeok-bin and his manager Jin-goo attempt to make a come back through an Internet pod cast where sexual concerns were honestly laid bare. Hyeok-bin draws attention right away with his frank replies to those listeners who send in their letters. Meanwhile, sexy columnist Yeo-jin, innocent looking actress Ah-hyeon, failure of a movie producer Tae-hyeon, model Seong-joon and producer Park are detected of shady relationships with one another and the broadcast goes crazy!

Dong-ki's sexuality is burning with passion but he doesn't dare ask his innocent and pretty wife Ah-hyeon to fulfill them for him. However, his friend's wife Mi-ae is different. She loves risky sex and she approaches Dong-ki first. They fulfill each others' sex fantasy. Their relationship gets deeper once they become neighbors.

Detective Agency: Face of the Gnome is the third episode of the melodrama, crime and thriller Korean movie series. The first one is Detective Agency - Love and War 2016 (탐정사무소 - 사랑과 전쟁). The unknown Jin finds out the detective office and asks Hyun-chae to investigate why his wife committed suicide. And it tells that the cause of Seonye is related to the inner part of Seonyun. Hyun Jung, who visited the South, finds out that the camp is hiding something from his statement. And I know Jinhui, a college alumni and psychotherapist. Hyun-jung knows that Jin-hee is a hypnosis specialist and feels that this event is related to hypnosis. Hyun-jung persuades the camp and goes to Jin-hee and starts to run down the things that happened on the day of the incident. After all, Jinhei starts to reveal the truth of all the events.