Love can drive people to achieve what seemed impossible. Son Tae Il has been in love with Ju Il Mae – ever since they were babies growing up as neighbors under one roof – and is determined to marry him one day. Despite having an IQ of 148, Tae Il is lackadaisical about his studies and doesn’t apply himself. Il Mae and his father, Ju Young Dal, devise a plan to useTae Il’s feelings for Il Mae to motivate him to study.
Young Dal challenges Tae Il to increase his school ranking from 300,000 to 3,000 nationally and graduate from law school – then he has permission to marry Il Mae. Not only did Tae Il do that – but he was also accepted into law school at the top of the Seoul National University rankings. After years of studying all the time and trying to keep other potential applicants away from Il Mae, Tae Il passes the judicial exam. But the reward she received was a surprise that Il Mae fell in love with another man. Despite all his efforts, will Tae Il end up losing the heart of his first love?