Lee Si-yeon

Struggling artist Min Hee-do is offered three billion won to bet his life to a game against a rich old man, Kang No-sik, who is dying from a terminal illness. The game is for each man to dial a random phone number and guess if the person who answers will be male or female. Hee-do loses the bet, and after a month long brain operation, he wakes up to find that they have swapped bodies.

In his 10th year at college, Eun-sik is part of a nearly ideal campus couple with swimming champ Kyung-ah. While their three-year relationship is solid, Eun-sik struggles to get to the next level with Kyung-ah; despite the help and support of his friends, he can’t manage to get her into bed.

O enredo segue a história do estudante de faculdade Eun-shik Jang e seus esforços para impressionar uma estudante junior Eun-hyo Lee. Eun-Shik tem o hábito de encontrar-se em situações um tanto estranhas, que muitas vezes o constrange e sabota suas tentativas para impressionar Eun-hyo Lee.

A series of embarrassing incidents force a mobster to go back to high school to finally graduate.