Kim Mingyu and Jeon wonwoo are bestfriend since they were child, growing old together, living in the same neighbor since child, going to same school together until high school. But, they need to be separated from each other when they choose different university for their future. Kim mingyu is a cheerful guy who always mess around, and a bit silly, while Jeon Wonwoo is a nice and good guy who always study. Their friendship going through a lot of problem since the first time they met you. You are a cheerful girl who always love to read a book and stay at library, going to same college with Kim Mingyu is one of the most fun thing you had, he has been your good friend since the first time you met him at the first day of college, until he introduce you with someone that make your life turn around 180 degree. Life become more complicated, which one that you will choose at the end?