Ki-joon, who lived alone with his younger brother Sang-woo, is worried about Hye-ran, who was the mistress of his father who died in an accident not long ago. Hye-ran had no place to go since their father’s support had been cut off. She had no plans to move away and Sang-woo is into her. Meanwhile, Hye-ran is not satisfied with her sexual relationships with Sang-woo and she is worried about Ki-joon’s mind.

Hye-ran, who has been living alone, has to live with Sang-woo, the nephew of her stepfather who her mother remarried. As time went, Hye-ran begins to feel lust whenever she sees Sang-woo. Even without blood relations, Hye-ran is confused about her feelings for Sang-woo, and she is also certain that her boyfriend, Gi-joon, is involved with another woman. Meanwhile, Sang-woo who had sex with Ji-eun, confessed to her that he was thinking of Hye-ran when they were in the middle of doing it, and then announced their breakup. Sang-woo went home late that night. Upon arriving the house, Sang-woo found Hye-ran in her underwear, pretending to sleep. Sang-woo eventually went in and touched Hye-ran. After confirming how much he wants her, she let Sang-woo take over her body.

Ji-eun decides to become a tutor for Sang-woo's son, Sang-woo, in order to make sure he has a rich boyfriend. When tutoring begins, Sang-woo, who was kicked by her older sister Hye-ran, is attracted to Ji-eun, who kindly teaches herself. One day, Sang-woo witnesses the love affair of his father and Ji-eun, and falls into a sense of loss. Meanwhile, Ji-eun overhears Ji-eun's conversations with a friend, and notices that Ji-eun's only goal is to meet her. In the end, Ji-eun notifies Ji-eun. Ji-eun arrives to attend the last class, and because of her appointment with Sang-woo, she eventually gives up her body.

Sexy female and juniors' desire to take her! Can they succeed in sex? Hyo-seok and Jun-kyu are colleagues at a company. Yu-ra, a workplace woman with a sensual body, always gets drunk when she drinks. However, Yura does not give permission until the last relationship even if she is drunk and ends in caress. Hyo-suk and Jun-gyu comforted each other, guessing that it would be because they had no experience with Yura, and they bet who will have sex with Yura first ... Yura, a woman, has a day with Jun-kyu and a day with Hyo-suk and a drink. Who will be able to have a relationship with Yura, a big and sexy iron-figured girl first?

Yoo-seok receives a farewell notice from Siwon. Yoo-seok, who was drinking, used to match Siwon and San Lotto in the past. The rest of the numbers are kept by Siwon. Yoo-seok telling the truth to Siwon, Siwon tries to take away Yooseok's lotto paper... .​

Heojin, who wants to swap, takes her husband, Wonjae, and goes to a pension with Nari and Taeho. Two couples swapping partners and enjoying swapping. Her husband Tae-ho, who was passive at first, rather enjoyed her after seeing him, but her heart is upset.