Kiss Room: Between the Lips

Third time repeater Sang-goo needs special tutoring for his upcoming college entrance test. His father puts his son away in a pension together with a beautiful female teacher in hopes of motivating him.

A street hooker named Hyeon-ah (Jeon Yoo-jin) is locked up topless in the pension of a man named Jeong-ho (Heo Dong-won) who saved her from her pimp's abuse and beatings. She was locked up for no reason and every time she struggles against him, he hits her. A couple visiting the pension find Hyeon-ah and the man who wanted to rape her is killed by Jeong-ho. Hyeon-ah tries to run away from him but realizes she has nowhere to go.

Repeat student Hyung-joon heads to a boarding school where he is immediately enamored of his beautiful math teacher.

Seon-yeong's husband cheats on her, which she endures until her younger brother-in-law comes to stay. After a series of events, she seduces him and decides to divorce her cheating husband and runaway with his brother.

Juyeop lives off part-time jobs. One day, Miseon, who closely resembles his ideal type, moves into the apartment below his. Juyeop gradually begins to secretly watch Miseon, seeing her as an object of his desire. Eventually, while spying on Miseon's home using a small camera, Juyeop makes eye contact with her as she engages in passionate lovemaking with her boyfriend...

During the late period of the Joseon, Jae-won, Man-ki, Deok-ho and foolish Chil-deuk are the only ones at the village school. The school is going through a rough patch so the school teacher visits his girlfriend the gisaeng and suggests to his students that they bring in female students. So-hyang and the other girls brighten up the mood of the school and more male students sign up. Yeon-hwa is jealous of Jae-won and So-hyang who fell in love with each other at first sight. She confesses her love to him but he doesn't give her any attention so she tells him So-hyang's secret. On the other hand, the teacher's wife is surprised to see a man wearing a mask peeking at her body but is surprised to the see the size of the hole in the pumpkin he dropped. Not happy with her husband's night skills, she calls in the male students one by one to find out but the pumpkin belongs to no one... To whom does the hole belong to?

Tae-soo is kidnapped by Mi-ok who conducts an unusual revenge. She tempts Tae-soo until he's crazy to please.

Min-seok, who is always tired after work, decides to start exercising and asks his assistant manager Yoon-soo, who works at the same company, for some tips. As Min-seok begins working out, he finds it difficult to keep up due to his lack of stamina. Feeling down, he enjoys a pleasant drink with Yoon-soo. Impressed by Min-seok's effort, Yoon-soo makes a call and arranges a special business trip massage service for him. Later, both of them receive a 2-on-1 massage service at home from two beautiful women.