Room 503's secret that is more pleasant if you come alone. Kyung-sook inherits a motel from her mother. In that motel with a strange atmosphere, when it's Friday and the clock strikes two in the afternoon, a middle-aged man, Soo-min, and a 'plumber', seem to compete looking for room 503.

I was once a novelist who was looking forward to the future, but now I am living in a house that is just a handful. I have to write, but the enthusiasm for writing has long been lost. One day when I was bored every day, my friend (Jane) of Sukjep (exponent) comes home. Jane pulls the hair out of her face with a sweaty face on a hot summer day and sits on the front door. When I saw Jane who seemed innocent and innocent and sexy, my heart was rocked ...

4수생 석진은 시험 성적표를 아버지에게 보여준다. 그런데 형편없는 성적에 화가 난 아버지는 아들에게 “이번에도 대학 못 가면 군대 보내겠다” 라며 개인 과외를 제안한다. 과외 첫날부터 젊고 섹시한 여자 선생님이 오고, 국영수 모든 과목 선생님이 여자다. 문제를 풀면 원하는 걸 다 해주겠다는 약속으로 열심히 공부하는데…, 매일 과외 시간이 행복한 석진은 대학을 갈수 있을까?

A man has an unstable relationship with his wife. After a night of karaoke with some friends, he begins to see that his tastes are a bit unusual.

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.

20-year-old Kyeong-soo is a man who's full of assumptions. He learned about sex from Internet porn, but nothing about the real thing. He's only had crushes and has never even kissed before. He got embarrassed when he confessed his feelings to Ji-yeon, his crush. He comforted himself from the shame with Japanese girls in his room with his right hand. One day, he has a fight with his father and remembers his friend Baek-hyeon had invited him over to Gangwon-do. There he falls in love with his friends' mother.