kim ah rin is d most beautiful,smartest girl of yonsei university but is most humble and genuine person. kim taehyung ,the son of d most richest man in korea ,kim yoo seok. taehyung is d schools biggest playboy in d school and is always rude to other people and likes to bully others.ah rin is a fresher and came from a middle class family . she only focused on studies and didnot have many friends. taehyung likes to make fun of all d nerds in d universty...but ahrin always walked past him without saying anything one day.....