Math is 20 year old Hyukjae's worst subject. He absolutely HATES math. Almost as much as he hates people. Unfortunately for him, it's a required class in his university. His professor, being sick of him flunking his class, has arranged for him to be tutored by Mr. Lee, the other math professor. Mr. Lee is rumored to be the toughest, meanest teacher in the university. His gorgeous looks pretty much make up for it (says his student fangirls). For Hyukjae, it doesn't matter how tough or handsome Mr. Lee is. He will make his life a living hell.