Yoo-ni is a freshman at university. It will be her first blind date in college. The other person is Min-cheol, a returning student in 4th year. They fall in love with each other at a glance. He receives a phone call from Yoo-ni’s friend Hee-jin, who is enjoying a happy relationship. Hee-jin said, “If you like each other, shouldn’t you have to match up with each other?” Yoo-ni is embarrassed from Hee-jin’s words. Eventually, Min-cheol and Yoo-ni go to the motel and agree to have sex with each other and match up.
The next day, Yoo-ni is shocked when she tells Min-cheol that she wants to take time for a while. Yoo-ni’s friend Hee-jin finds out her reason, and she tells Yoo-ni that her and Min-cheol doesn’t match too much, and that he is in shock. With her information from Hee-jin, Yoo-ni is introduced to her senior Ah-ra, who is called the queen of sex, and learns various sex skills from her. Her lover Jin-soo, also serves as her assistant and trains Yoo-ni to be the best sex machine.
Yoo-ni, who has been taught all her sex skills by Ah-ra, covers Min-cheol’s eyes before Ah-ra flirts with him, and shares her sex with Min-cheol on behalf of Ah-ra. After sex is over, Min-cheol is surprised to see Yoo-ni and begs to see her again, but Yoo-ni takes revenge on Min-cheol, saying that she doesn’t want to meet him because she hasn’t had sex with him.
