Sung-hyun sees Jin-hye again at a class reunion, who already turned his head at school. She's still damn hot and the two get along very well. But despite an intense flirtation, Sung-hyun can't get her into bed. When he wakes up the next morning, the day of the class reunion starts all over again. Now Sung-hyun wants to take advantage of this opportunity: With his findings from the previous day, he does everything he can to seduce Jin-hye into sex after all.