His wife has been acting strange. Oftentimes, she would go wherever, won't receive his calls, and won't reply when asked. The husband, Dong-seok, who suspects his wife's strange behavior, finds a business card in her car and visits it. He meets Hani there, the woman she saw in a video, and while he was immersed in her story, he experienced something strange.

A housewife who has presenile Alzheimer's feels romance with a young man. She has hot intercourse with him and not her husband who embraces her rachet sex life and holds her with dear love. She feels physical pleasure and delight during intercourse that she's never felt with her husband before! Her affair with the young man starts like that.

Newly married couple Eun-mi and Seong-soo look ordinary, but they both have their own secrets. Eun-mi enjoys calling her boyfriend to her home while her husband is away on work and Sung-soo enjoys watching his wife have sex with other men through the CCTV in his house. Not being able to get over the excitement he feels by doing that, he tells his wife everything and suggests she has sex with another man again...

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.

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.