Yeong-tak and Ha-na are stepsiblings who live with the support of their divorced adoptive parents. The two begin taking individual private lessons for their respective careers. Yeong-tak secretly gives his acting teacher Na-ri sleeping pills to covet her body, while Ha-na is busy seducing her physical education teacher Han-cheol. Meanwhile, Na-ri and Han-cheol run into each other at the stepsiblings' house, fall in love at first sight, and seek revenge on the two who offended them.
Hae-won is a wife who is pathologically obsessed with her husband. When her husband, In-seong, goes to work or is out of her sight, she constantly calls him and monitors his every move. One day, Hae-won invited her best friend, Song-joo, to their house to hang out, but she began to suspect that the relationship between Song-ju and In-seong was strange, and ends up threatening her best friend's life when she comes to clear up her misunderstanding.
The first story is about the first experience of a dim and innocent man in a karaoke room. The second story is about the experience of a young bride who is dissatisfied with her husband. The last story is about a woman who is in trouble after having drunken sex with her male friend.
Two women, Hae-na and Hee-na, prey on men under the pretense of marriage. One of these men is a doctor who falls for Hae-na and showers her with luxury gifts, but that's all he does. She can hardly get in touch physically with him. Meanwhile, Hae-na meets Ji-hoon, her former lover, again by chance, but after finding out about his relationship with Hee-na, the three decide to pursue money rather than love and start working for the men around them.
Hee-jeong and his male colleague were locked up when the door is locked while they cleaning and organizing a warehouse. While they are still trapped, the male employee filmed her physiological phenomenon, and later used it as blackmail for him to covets Hee-jeong's body. He even demands 2-on-2 swapping with their other female colleague.
Chae-yeon, who has never been in a relationship, secretly has a crush on Nam-gyoo, the president of her company, and practices kissing in front of the mirror every day. One day, Chae-yeon musters up her courage and asks Nam-gyoo to kiss her, but Nam-gyoo avoids her, promising her next time. But in fact, Nam-gyoo has never kissed properly before, so he goes to take kissing lessons to fulfill Chae-yeon's request.
Jeong-cha is a sexless married man. Although he is married, he secretly likes his manager, who is the only hot spot in the company. One day, Jeong-cha discovers a strange relationship with her boss, and the manager learns that there is a secret contract between the two of them. Jeong-cha sticks around by her side to sign a contract with her manager.
Ji-hoon, who is a loving husband, is always worried due to his premature ejaculation. He can only last for 10 seconds after insertion, so he just keeps caressing his wife for a long time, as he always feels afraid that he will finish quickly. At her wife's urging, he began consulting with a psychiatrist. When Tae-woo, another patient with a similar problem whom he met at the hospital, discovers his illness, the two become true friends who share each other's pain.
Dong-sik and Jeong-mi, a married couple who run a multi-level company, make a huge amount of money through fraud, where they trick their victims using romance scams. The couple recruited Mi-yeon and Won-woo for the job. Later, Dong-sik and Jeong-mi develop feelings for Mi-yeon and Won-woo as the couple gets tired of each other. They begin relationships with their recruits by buying their favor with money.
Unsatisfied with her relationship with her boyfriend, Ji-hee receives a business trip massage through the introduction of her older sister, Mi-yeon. After that, Ji-hee falls in love and becomes obsessed with giving massage services to her on business trips.
Han Seo-ah is a South Korean AV actress.