It's So Big It Hurts, Black Oppa

Yeong-seok had a crush on his club mate, Hee-yeon. He decides to confess her love after 1262 days but gives up upon witnessing Hee-yeon kissing her senior. With his roommate, Byung-soon's recommendation, Yeong-seok visits a dating coach website called 'Adventure M' and he will meet another applicant, Myo-ryeong. Myo-ryeong who picked up and dropped off the perfect-looking, sexy Yeong-seok, offers a motel tour...

Mi-yeong, who lives in the backhouse comes between the strong friendship of Deuk-chan and Cheol-soo. Mi-yeong is usually blunt and cold, but in bed, it's a different story. Deuk-chan approaches her with love, but Cheol-soo only wants to remain sex partners with her. Meanwhile, Deuk-chan who loves Mi-yeong had an old sex partner, Hee-jin. Cheol-soo shows interest in Hee-jin. The love story of two youthful men and women begins...

One day on the street, Mi-yeong greets Deuk-chan then he made a fuss, wondering if he likes Mi-yeong. Whenever he is having sex with Hee-jin, thoughts of Mi-yeong comes to him... Then one day, his friend Cheol-soo sets up a blind date. A few days later, the blind date happens and the woman who came is none other than Deuk-chan's dream, Mi-yeong. As soon as they meet, they go to the motel... Mi-yeong who is usually blunt looks so different in bed. Deuk-chan loved that Mi-yeong who finds eating harder than having sex. There's a subtle air between the two...

Min-soo and Jae-hyeok is in a good father-and-son relationship. But one day, Min-soo brings Jae-hyeok's young stepmother, Da-hee. Jae-hyeok leaves home to wander around, ran into Da-hee's friend, Na-yeon, and had a little talk. Na-yeon calls Da-hee... Da-hee goes home with Jae-hyeok, and Min-soo doesn't care much. Jae-hyeok tells Da-hee how he feels. Meanwhile, Min-soo who disapproves Da-hee and Jae-hyeok's relationship, calls Na-yeon to kill some time. And Na-yeon who is worried about Da-hee and Min-soo crafts a new plan...

Eun-ji and Seung-ho, Seong-sik and Joo-ran move into a neighborhood at similar times. Eun-ji is lonely because of her husband's frequent late-nights and Seong-sik takes care of the house while his wife works. One day, Seong-sik goes over to Eun-ji's house to return a package but end up drinking wine with her. Seong-sik drunkenly kisses Eun-ji and the two spend a night in each others' arms. They continue to meet secretly like that and one day lie to their husband and wife and leave on a trip together. However, Seong-sik returns home because his pipes have burst and Eun-ji witnesses her husband and the woman next door, Joo-ran in bed together. A few months later, Seong-sik, Eun-ji, Seung-ho and Joo-ran run into each other but with different partners... Are you living with the one you love?

Min-woo solves his sexual partner Yu-ri's financial troubles, and Sam-su-ha hires Yu-ri as Min-seok's tutor on the condition that he keeps his relationship a secret from Min-seok for the sake of his younger brother Min-seok's math grades. Min-seok gets excited when Yuri, who looks sexy his age, starts tutoring him, and he dreams of having sex that night. Meanwhile, Yuri doubts that Min-woo is dating another woman, but when she learns her door code while attending tutoring, she sneaks into Min-woo's room late at night to confirm. Yuri, delighted to see Min-woo sleeping in her room without having an affair, wakes up sleeping Min-woo and gives her a special service.

A Female Employee's Taste

Eun-joo is a twenty-year-old pre-college student who lives with her sister Eun-hee. Eun-hee is worried about her sister's academics and hires Je-hyuk as her tutor. Eun-joo falls for Je-hyuk as time goes by. They end up making love. A few months later, Eun-joo improves her grades and passes her tests. However, Eun-hee announces that she's getting married to Je-hyuk and Eun-joo doesn't want to lose him...

Woo-jin, who is a repeater of college entrance exam, and Taek-sik's friend, Kang-hee come and visit Woo-jin's hometown on a small island. Woo-jin's mom, Hyeon-sook operates a small sashimi restaurant and a bed and breakfast to make a living on the island. Although Hyeon-sook has sex with Bong-seong, she rejects his proposals. One day, Woo-jin is terribly shocked to accidentally see his mom Hyeon-sook and Bong-seong having sex.

Dong-seok, the husband who drinks everyday and comes home late. While Sang-hee waits for Dong-seok, she is being comforted by the main character of the movie, Min-gi. Meanwhile, Dong-seok feels sorry for his wife and talked to Yeong-cheol about his troubles. After seeing a video only meant for the couple, and hearing Dong-seok's troubles, Yeong-cheol told his wife, Mi-yeon, that it was nothing. The wife's nervous behavior continues. Dong-seok sneaks through his wife's car. He found a business card and heads there. There, he meets Ha-ni, the female character in the video and experiences a strange sensation. Mi-yeon continues to revolve around Sang-hee and Dong-seok. The couple continues to fall in a confusing situation... Louis, the man who knows everything and the one who controls the couple... Sang-hee and Dong-seok have an experience of changing their daily lives.

A young woman named Gina buys a how-to book on sex, leading to a series of erotic dreams and fantasies.

Stop peeking and let's have a fling. Min-ho works at a private detective agency where peeking into others' lives is what he does. One day, a pretty woman named Mi-na asks him to tail her husband and Min-ho is in for a shock. The man he's tracking down is in an affair with his wife, Soo-kyung. The place they meet each other is usually Min-ho's house after he's gone to work. Min-ho installs secret cameras to catch theem in action and watches the scene with Mi-na.

Sang-min is living in Hyung-min's house. One day, Hyung-min brings home his girlfriend So-mi and says she'll be living with her. So-mi looks younger than Sang-min and he witnesses his brother impose physical violence on her. Actually, Hyung-min had brought her home because she had nowhere else to go after the stocks crashed and he was paying off her debts. She'd put her hands on Bitcoin once again and he was only trying to persuade her out of it, but Sang-min had gotten the wrong idea. So-mi was sad and drunk and Sang-min ends up having sex with her. Hyung-min witnesses this, but pretends not to know. Sang-min slowly abandons his girlfriend, Jung-hyun, who comes to his house because she can't get a hold of him. Alone at home, Sang-min tells her about his relationship with So-mi and makes a secret suggestion.

Joon-ho falls for his new step-mother, Min-joo. He suppresses his feelings because she is his father's woman, but one day his father passes away. In addition, the step-mother has been throwing him signs and her daughter Eun-jung leaves the house. Joon-ho is alone with Min-joo and he comforts her for losing her husband. However, he ends up comforting her not just mentally, but physically as well.

Sung-joo and Joo-hee moved into a new house next to Jong-gyu and Min-joo. Joo-hee gives out ddeok to tell them they've moved in next door. Jong-gyu falls in love with Joo-hee at once and thinks about having sex with her. Meanwhile, Sung-joo goes next door to borrow a tool and he falls for Min-joo. The husbands are attracted to each others' wives and soon they cross the line.

Eun-mi and her husband have been married for 5 years, but they rarley have sex. Eun-mi goes through her SNS one late night and finds a post about 'invitation girls'. After thinking about it for a few days, she signs up for it and gets invited by Hyun-ji and her husband for a new and stimulating experience. Eun-mi shared her experience with her husband and 'swaps' with Hyun-ji and her husband....

Tae-hun, a young and sexy aunt and a nephew of the nephew, a college student full of desires, begins and imagines her own college life alone. As he enters, he sees the owner's mature body and beauty and is happy to board. One day while she was drooling while looking at her sexy aunt Kyung-suk on her immaculate skin, while she sneaked into her aunt's room, she saw her aunt on the Internet. After that, Tae-hoon solves her desire by looking at her aunt's friend, but Tae-hoon becomes increasingly eager for her. Min-wook confesses his concerns to his friend Min-wook, and Min-wook proposes to commit his aunt with his aunt's friend. Tae-hoon, who came back home, comforted himself while looking at his aunt's friend as usual, and suddenly opened Tae-hoon's visit and entered Kyung-suk! Can Taehoon really have sex with his aunt?

Seung-Tae and Hee-Won are lovers who enjoy sex life naturally and actively. Hee-won's junior, Kyeong-suk, comes to the house where the two live together, and the three go to Sokcho together.

You only have eyes for me? Seong-yeong and three men around her. She says she loves them and have loved them. "There's goodbyes and pain. That's how you mature up." Seung-won was innocent. Jang Hyeok was passionate and Seok-min was cozy. Seong-yeong was in the middle of them. She suffers from meeting the three of them and decides to take revenge on those who betrayed her.

A young couple travels to a guest house run by another couple. The allure of this place is that it can arouse the sexual fantasy of new couples through swapping partners between the guest couple and the couple who runs it.