Campus couple Sang-yeol (Kim Myeong-joong) and Mi-na (Lim So-mi) are a married couple who maintain their living as a magazine reporter and pretty famous writer. Sang-yeol, who is always at home writing, has been in an affair with his neighbor and collegemate Da-yeong (Hwang Jeong-ah) for quite a while. Then one day, Mina runs into Da-yeong and exchanges phone numbers. Mina starts to suspect the frequent phone calls to her husband from an unknown number. She finds out Da-yeong is the one he's been cheating on her with but she isn't upset. Da-yeong's husband Hyeon-woo (Lee Hyeon-gook) had once dated. One day MIna meets Hyeon-woo coincidentally through work and seduces him. He falls for her and the complicated relationship begins...
Beautiful DJ Da-som hosts a late night visual radio show for adults. It's called One Night Radio. Listeners are treated to a unique episode about sex every night. With Da-som's calm progression, the real and hot story heats up the night.
Writer Park lives by writing day by day. One day, he stumbles upon a woman, Hae-joo, who collapsed on the street while taking a walk in the early morning. Hae-joo asks Park to take her home, saying she needs a place to rest. He kindly gives up his studio for a stranger. He begins his secret and cheeky story.
Seo-yeon likes Jin-woo, her friend since high school. She is satisfied with their current relationship where she hides her feelings and stay as a friend. Jin-woo is not greedy because he didn't have a girlfriend for a long time. Dong-hyeon, who secretly likes Seo-yeon, knows that Jin-woo and Seo-yeon like each other, but he doesn't say anything. As time went by, Dong-hyeon found out that Seo-yeon was unlikely to like him, and asked Seo-yeon to sleep with him because she will connect him to Jin-woo. The two men's mixed love between a woman is just beginning.
Na Joo-ri and Ahn Joo-ri have been friends since high school. Two people with the same name but opposite personality, Jal-joo, a married women who enjoys free sex, and Ahn Joo-ri, who keeps her virginity before marriage. Yong-jin, who promised to marry Ahn Joo-ri, has yet to have sex. The frustrated Yongjin tries the first night with Ahn Joo-ri with the help of Na Joo-ri.
Jin-woo sees Seo-yeon and Dong-hyeon together and makes fun of the two. Annoyed with Jin-woo's jokes, Seo-yeon leaves but Dong-hyeon bit Jin-woo's words and misunderstands Seo-yeon's liking for him. Jin-woo starts teasing Dong-hyeon excitedly. Dong-hyeon who is clueless about anything is excited about his relationship with Seo-yeon.
So-ri a lyricist wearing large headphones, visits the same space every day. The anticipation that her first love Jin who disappeared long ago after the accident, will return again. So-ri's wishes become reality. Jin is back again. So-ri and Jin hide their secrets about each other and start a deep relationship that they couldn't even imagine before.
Seo-yeon is running a boarding house. She has a habit of changing men every quarter. Yeong-cheol, who was recently brought to the house is cute, but he tends to be clingy in relationships which makes her feel a little uncomfortable. When Yeong-cheol is away from home, he calls Min-soo to his house. Min-soo provokes Yeong-cheol when he knows how Seo-yeon feels. But Seo-yeon's mind is different... Who will win Seo-yeon's heart?
Ma-ri, who believes she is very special and beautiful, thinks people can hear her thoughts. The psychiatrist who became Ma-ri's new doctor was listening to her in an isolation ward. Suddenly, she feels naked from Ma-ri's sudden, unnerving cry.
A river crossing is blocked and various traveling couples are stranded at an inn. Everybody has their secrets and the police are looking for a suspect in their midst.
A ticket war between sexy girls! There is a ticket coffee shop in a small town. Kang Cherry is the most popular girl here. The town men are desperate to get their tickets with Cherry everyday. However, Cherry doesn't easily give into them and she's haughty. One day, Moon-sik moves into the town to live a quiet life. Cherry recognizes a man with money right away and tries to seduce him. Moon-sik who visits the coffee shop out of curiosity falls for Cherry right away and can't seem to get enough of her...
A story of an innocent young lass desperate to leave her homeland to escape her adoptive father's lustful desires.
A woman finds a man who looks just like her husband on a new business account, and a man who hurt his back while exercising with the woman he loves, and goes to the woman who likes him and gets a sex massage.
Min-gyu, Soo-yeon, Young-suk, Wisdom, and Cho-hye go to a three-room pension. Solo Cho Hye-man sleeps in the attic room of Fumijin, and the rest of the friends are couples, so they are assigned a good room. Cho-hye, who is full of heartache, suddenly falls asleep in the attic and has a strangely vivid dream. In a dream, she has a hot sex with friend Suyeon's lover Minkyu. The next day, Cho-hye, who had been in a troubled mind, comes to the attic with another friend Wisdom sleeping. And while they're sleeping while chatting, Min-gyu and three have the same dream of having sex at the same time. And when they wake up, they sense that there is something weird in the attic ...
Whenever she sees a messy kitchen, she calls her childhood friend Min-soo. Min-soo, complains in words but still brings side dishes to Seo-yeon. They're friends, but sex partners. Seo-yeon's relationship with Min-soo from their young age is natural. Min-soo is worried about Seo-yeon. He is jealous of the relationship between his younger friend Yeong-cheol and Seo-yeon.
Min-hyeok received a new tenant while using his house as a share house. One night, she finds Na-yeong sleeping on her front porch. Na-yeong entered the share house on the same day and the two sleep in the living room. Jin-woo came out after washing and Na-yeong woke up. Jin-woo has feelings for Na-yeong who is like four-dimensional... Meanwhile, Min-hyeok notices the strange currents of the two. Although Na-yeong knows Min-hyeok's feelings, he attracts Jin-woo to her room. The story of the dizzying love between two friends to take over a woman is just beginning.
Ji-eun, a Korean female college student who came to Japan to study, works part-time at a convenience store to pay for tuition and living expenses. The friendly store owner invites Ji-eun and Min-woo to his house. Ji-eun and Min-woo are forced to suffer between their mistress and her lover. From that day on, the mistress torments Ji-eun by revealing her true nature. Min-woo, who is worse than her, drags Ji-eun out of the convenience store and falls in love with her again.
Couple Hee-joo and Woo-seok, who are in good harmony with each other, become increasingly provocative sex addicts. Unknown to Hee-joo, Woo-seok offers watching sex to his senior Jong-gyu, and Jong-gyu gets a thrilling experience. After having a taste of "spectator sex" Jong-gyu secretly meets Hee-joo and his girlfriend Mi-seon and the three of them have sex.
The Boys of Cellblock Q is set within the bowels of the Sunnyvale Labor Farm. Without the presence of women, the prisoners indulge in regular trysts with one another, make full use out of the jail's supply of priests, turn the eyes several policemen, and help a young convict learn the ins and outs of the prison community.
Drunk Min-woo and Jae-hyeon attack Na-yeon's house. There, Jae-hyeon confirms that he likes Na-yeon. Min-woo secretly enjoys sex with Na-yeon, knowing that Jae-hyeon likes her. When she learns that he likes her, Na-yeon tries to use her heart... she is happy without knowing anything.