Synopsis Korean Movie Crazy First Love

On Tae Il is a super problem child of Kang High. He has an incredible IQ of 148, but, unfortunately, he's only interested in marrying his first love, Il Mae. When Tae Il demands marriage with Il Mae and strays farther away from school, Young Dal and Il Mae come up with a proposal to 'bring Tae Il back to the right track'. He openly declares that he would allow Tae Il to marry his daughter Il Mae if he could raise his rank up to top 3, 000 nationwide from his current status of 300,000.
Tae Il accepts the ridiculous proposal without a second thought. And 2 years later, he does pull up his rank up top 3,000 nationwide and is admitted to the Law School of Seoul National University. However, fooled by Young Dal's skillfully touching(?) performance, incorporating tears and snots, Tae Il gets softhearted and promises Young Dal that he'll keep Il Mae 'pure' until he passes the judicial examination. A man's words weigh and worth as much as thousand gold! From then on, Tae Il's ultimate mission is to protect Il Mae from all the sleazeballs who approach her!
Tae Il's new job as Il Mae's personal bodyguard has begun. However, his double-duty of studying for the judicial examination and monitoring Il Mae's whereabouts is keeping him awake 24-7. On the other hand, Il Mae, who wants to enjoy her college life and date boys, gets frustrated watching Tae Il, who only focuses on his study and even rejects Il Mae's approach to kiss him. What she doesn't realize is that he's doing all this to be with her.
After countless nights of no sleep and nosebleed, Tae Il finally passes the 1st level judicial examination. However, at his congratulatory party, Il Mae drops the bomb by confessing her love for another man. Tae Il can't believe his ears. Can this be really happening? Will Tae Il be able to regain and keep his first love?