Seon-woo and Eun-gyeol, two old friends who grew up together since their snoring days, live together with their wives even after marriage. As time goes by, the two begin to lose interest in their relationships with their wives, Ga-hee and Jeong-eun, and decide to try swapping. After swapping, Seon-woo and Eun-gyeol's friendship begins to crack, and they start to covet each other's wives at will. In the end, Ga-hee and Jeong-eun leave their husbands.

A female college student is working part-time at her father's laundromat business. One day she had an unusual laundry request: to have the laundry delivered to the customer's house. She carefully opens the door and enters the house, where she witnesses sex between a man, who appears to be the owner, and a woman. The female college student, who hides in the kitchen, watches the scene and is caught by the man while masturbating. A man who is having fun offers sex to her, who is in a state of excitement, and the atmosphere between them becomes luscious.

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.

Ga-yeon is tired of her kind and innocent husband, Shin-woo, so she has an affair with adulterous man Dae-ho. As soon as Shin-woo goes on an overseas business trip, Ga-yeon calls Dae-ho home and lets him disguise himself as a robber and have sex with him. However, Shin-woo suddenly returns home and witnesses the affair. He suffered from guilt when his wife had sex with another man in front of him. In the end, Ga-yeon leaves home, and Shin-woo, who thought he would have a hard time without her, is rather happy.

Eun-ji and Shin-ae are lesbian lovers. However, Eun-ji is forced to marry Jae-seong due to her parents' torches. Due to Jae-seong's severe paranoia, he suspected his wife Eun-ji, who is unhappy with their marriage, of her relationship with Ho-jeong, Shin-ae's senior, who lived next door. With the help of Shin-ae, Eun-ji divorces Jae-seong, and Shin-ae approaches him for Eun-ji's revenge.

Eight men and women unpacked in a group dormitory to find partners. A fierce game of wits is played out to find a delicious partner. Who will be the one to win the best taste?

Eight men and women flocked to a pension and gathered to appear on a blind date entertainment program. They gather at the pension for four days and start dating different people to find the right match for each other. They are called No. 1, No. 2, No. 3, and No. 4 rather than their actual names, and they go on dates to find the right match for each other.

As always, the sun rises, and the cast members who experienced boredom from their previous partners the night before look for their new partner. They share food prepared by the production team, explore each other's sexual preferences, and begin sexual intercourse in earnest.

After learning that soldiers are popular with women these days, Do-joon takes out his military uniform stored at home, wears it, and meets Mi-yeon, his former senior from school. Mi-yeon, one of the women who likes men in military uniforms, sees Do-joon walking around wearing one and says he looks cool, so she takes him somewhere.