Troublemakers Mok-won, Ryu and Hak-moon are far from passing the state examinations. Three female students enter the school during a new spring term and the atmosphere changes. Then one day, Mok-won and Ryu are taken to around the back of the school and molested by an unknown woman. The three of them start an investigation.

Yoo-jin appears in the dreams of Dong-jae who is a host for lonely women at night. She appears in real life, asking him for help. What she needs is to sleep with him once. Yoo-jin was a virgin ghost and she needed Dong-jae to help her to go back to the after world. However, he doesn't want to sleep with her because she used to be his crush and he'd been waiting to see her in his dreams and in real life. He is afraid sleeping with her will make him lose her. Will he sleep with her or continue to live with her like this?

Nineteen-year-old, Jin-goo enjoys an erotic moment to himself while thinking about his pretty English tutor. Then one day, he is caught in the middle of an embarrassing moment and becomes awkward with her. However, this becomes an opportunity and she starts teaching him sex. Their replationship becomes an uncontrollable romance. However, she quits the tutoring and the relationship to get married. Time goes on and Jin-goo is a grown up. He's used to thoughtless sex. However, his partner of benefit gets pregnant so he meets his future-mother-in-law to talk about marriage. However, she's so beautiful and sexy. He moves in with the in-laws but soon breaks out of the marrige due to his wife's fling. The mother-in-law doesn't know how to make it up to him for what her daughter has done. Jin-goo suggests something dangerous...

Jeong-soo is far from getting his grades up after he breaks up with his girlfriend so his father gets him a tutor.

Jeong-hwa has sex with various sponsors to maintain her popularity in the show biz where sexual favors are a must to survive. However, her schedules get cancelled while she goes out giving more sexual favors. Then she meets Yuni who became a celebrity because of Jeong-hwa and she tells Yuni what to do to survive in the show biz...

3 idol wannabes pass the audition. They get dance and acting lessons while living together. They even get sex lessions. They sleep with sponsors under the orders of their management director and managers and dream of becoming the greatest superstar ever. Will they succeed?