Kang Taehyun and Choi Beomgyu have been enemies since childhood. They are both in their final year. They are complete opposites. Taehyun always tries to ruin Beomgyu's dates. And in general he just mocks him. Taehyun calls him “princess” even though Beomgyu is a boy and this makes him very angry. But today Beomgyu decided to add truth serum to his coffee to find out who Taehyun loves and tell it to the whole of Hogwarts.