Jini feels skeptical about her familiar life. A life you want to run away from. She has a crush on the newly entered boxer Doosan and asks to leave the place together. Doosan decides to stay there, contrary to Jini’s wishes. By the way…

Yeon-hee, who hasn't changed her hair and isn't ready for the first night, gives sex advice to her friend over the phone and calls her boyfriend over to have sex. Unlike the first time, he is overflowing with libido and visits her office to have sex. Ji-ho is worried about her girlfriend. Although they are friends, Chae-ah and Seon-woo end up having sex after drinking during the day. Different sex stories of 4 couples.

Won-il convinces Ji-na to make money through phone tube. The video of the two went viral, and Won-il picks an additional person. Hwa-jin and Yoo-na who started to work together like that visit Ji-na one day to receive a video and Kwang-soo run towards them...

Yeon-su had a hard time getting into music school, but she has to continue her college life alone and work part-time, so she can't continue her studies properly. A performance in a short skirt, determined to give up to the professor in charge. But a professor in charge is not blinking an eye. Having lost hope, Yeon-ju tries to give up her life, but dreams of an elegant life due to the sudden luck.

Tae-gyoo secretly admires Eun-jae, the beautiful team leader in the same office, but he likes Eun-jae only in his heart because he is already in a relationship with Hye-yeong as a live-in couple. Tae-gyoo who was working with Eun-jae through video chat while working from home, is surprised to see Eun-jae, a computer illiterate, masturbate by calling his name while turning on video chat. The next day, Tae-gyoo secretly peeks at the scene where Eun-jae is dating her husband through a video chat screen, and is angry to learn that her girlfriend Hye-yeong cheated on Eun-jae's husband.

Ji-hye, Yeong-joon, Soo-yeong, and Mi-na enjoys the bachelor party! The next morning, Ji-hye had her ass ripped apart and Yeong-joon had erectile dysfunction, but none of them remembers what happened. They're on the hunt for clues! Three people checked Joon-tae's items in the kitchen. They found out that Joon-tae visited the party. The questioning of Joon-tae revealed that Ji-hye and he had sex but there are more suspicions. The size of Joon-tae's small dick can never tear Ji-hye's ass apart. Who the hell ripped Ji-hye apart?

Su-mi, who is tired of Ki-seok's perverted sex life, decides to divorce her and rips the divorce papers when Ki-seok, who has won the lottery consecutively, appears. In order to get Ki-seok's money, Su-mi invites Seong-ho, who had cheated on her in the past, into her house. Seong-ho also invites Chae-yeon, a flower snake from Sinsa-dong, who is delighted with money, and launches a huge scam. Chae-yeon, Seong-ho, and Su-mi deceive each other in order to win Ki-seok's money. But the counterattack of the formidable Ki-seok is also getting stronger...

Yeon Ja, a working mother, runs a car center after divorce and is raising her daughter all by herself. Her daughter, Ah Jung, started helping her when she became an adult, however, the customers don't trust weak-looking women to touch machines and the business at the car center is slow. Thanks to Ah Jung's punk boyfriend, Sung Hoon, they came up with an idea to turn the car center into a sexy car center.

Mi-ra, a woman with violent and boyish personality. Jeong-seok, a timid man who finds Mi-ra's violence attractive. Jeong-seok is a visual but his every action and his slouched shoulders make him look really timid. Do opposites really attract? The two people were drawn to each other's different charms. Whenever they're having an intercourse, Mi-ra led everything, and she makes aggressive demands like scribbling on her body or swearing on her. However, the timid man's standard has not changed, and Mi-ra says goodbye to Jeong-seok. He happened to meet Tae-hee by chance. Tae-hee is a hardcore master! She is an instructor who runs a private tutoring center with Seong-ho. Jeong-seok learns the essence of being hardcore from them and begins to straighten his slouched shoulders.