Jinhee, who became the wife of the professor in charge, moved to the professor's house. I secretly enjoy Something with Sangyoon, the second son of a professor who has been a fan since childhood. However, he was caught by his first son Sang-cheol. Jinhee's life falls into an irreversible hollow.

Hye-won, Hee-jung and Joo-hee are university alumni. Everyone is envious of Hyewon who got married first, Hyewon, who has no marital relationship, is more envious of her unmarried friends. Hee-jeong gives her friend Joo-hee, after being proved by Sekpa Min-woo. Hee-jung has an affair with her boss. Hyewon and Joohee discuss changing husband and lover to try. Joo-hee is flirting with Hye-won's husband. Hye-won is attracting Joo-hee's lover. Couples swapping each other and swapping. They break up, promising to meet again.

Woo-hyeon finally passes his college entrance exams and lives with his aunt, Mi-yeon, nearby. He sees her for the first time since he was young. She's not his real aunt, but she's younger than he thought. Then one night, Woo-hyeon peeks at Mi-yeon, who is pleasing herself. So begins the dangerous relationship...

So-ra, a woman who lives day by day meeting conditions. Hyeon-soo, a man obsessed with women's scent. Upon Hyeon-soo's suggestion to sponsor her, So-ra maintains a lover-like relationship with him. Sora and Hyeon-soo as couples seduce men for fun, enslave them, and then destroys families. Once, while seeing a happy couple in a chicken restaurant, So-ra felt jealous and wanted to break that happiness. So-ra and Hyeon-soo decide to seduce the husband and brings him to their guest house after several delivery exposures. In the end, the couples swap together with Seok and Hyeon-jin at a chicken restaurant. Can Sora's plan succeed to destroy ordinary couples?

Dongwon-Minho brothers living in one house. My brother Dong-won is watching a video at home without a girlfriend. She introduces a woman because her younger sister is sorry. That night, Dongwon's girlfriend support and introduce to her brother. Invites Jisu to the house and gathers for a drink. The night is getting deeper and drinking is. Suddenly Jisu kisses Minho, Let's seduce them and make love that day. The next day, Index and Ji-won come back to play. My older brother, Gim, who became a younger brother's lover. Sneaking into her sleeping room...

Jeong-hee goes home to take care of her sick mother. While Jeong-hee is gone, Yoon-soo convinces his father, Seok-jin, to call a housekeeper to do the chores while his mother his gone, and so comes Se-hee. Yoon-soo likes Se-hee and ends up sleeping with her. Seok-jin also ends up sleeping with her while receiving a massage from her.

Yoo-jeong, who was in a relationship with Hooni, has a problem. It's sex, For her, sex is always simply an act of uninteresting love. But after hearing the words hurt by her lover. In search of a secret tutor of sex, you will be born again from a sex beginner to a sex scene.

Bar examiner Yoo-jeong likes sex more than studying. Thanks to the secretive, but erotic tutoring by the teacher her boyfriend introduced to her, Yoo-jeong’s grades shoot up. Yoo-jeong’s mom, Mi-jin, however, feels attracted to her tutor and starts seducing him.

Mincheol and Suhee go to greet Minchul father (grandmother) before marriage. Dae - sik welcomes her daughter - in - law, Su - hee. But before marriage, Minchol and Suhee are separated by the difference in personality. Soon-hee, who was only preparing for marriage, is soon to live.