The story of a man who observes couples and contemplates whether it would be good to get married.

Hae-joo continues Dong-woo's story to writer Park. Dong-woo keeps calling men on weekends then one day, a man nicknamed uncle comes to Hae-joo. And Dong-woo and uncle got into a secret relationship with Hae-joo. Park, who listened to Hae-joo's story, gave Hae-joo a massage, and Park began to take over Hae-joo's body.

Three men and three women live in one house and live like a family. They share each other's lives, such as girlfriends, affairs, rent, and live while enjoying their own private lives. One day, when Ye-ri enters the house, a strange energy begins to circulate in the house...

Three men and three women live in one house and live like a family. They share each other's lives, such as girlfriends, affairs, rent, and live while enjoying their own private lives. One day, when Ye-ri enters the house, a strange energy begins to circulate in the house. Meanwhile, Yeri begins to seduce Nam-soon, who is worried about her.

Tonight with another man! Seong-kyoon and Soo-ae live together, two people who don't know whether they only live together, or married. Seung-kyoon loves Soo-ae so much that he's been living a modest life One day, Soo-ae tells him that she has a man He finally kicked Soo-ae out of the house, but still dying to see her Seong-kyoon who couldn't stand the situation has to make an important decision...

Tae-woo lives in the house of his son, Sung-hoon and his wife. To win the favor of his daughter-in-law Jung-hee, Tae-woo helps in the house work. Jung-hee is aware that Tae-woo have been trying to get her attention, so she started wearing revealing clothes and starts seducing and seducing him.

Ha-neul haven't seen her friend, Ye-sol for a long time, and so they spent a good time together. That time, Ye-sol's father, Min-soo enters the house. Ha-neul sees the young-looking Min-soo and makes a fuss. Ye-sol who is a little bit tipsy tells Ha-neul that he is her stepfather. That night, Ha-neul secretly entered sexy Min-soo's room...

One day, her family gathers for an offering and they worry that she's the only one without a boyfriend. Her brother-in-law, Ho-seok, sets her up on a blind date with his colleague, Min-soo, who has always been nice to him. The more she talks to Min-soo, the more Seo-ri realizes she is interested in her brother-in-law, Ho-seok. She then tries to meet up with him frequently.

Writer Park lives by writing day by day. One day, he stumbles upon a woman, Hae-joo, who collapsed on the street while taking a walk in the early morning. Hae-joo asks Park to take her home, saying she needs a place to rest. He kindly gives up his studio for a stranger. He begins his secret and cheeky story.