In the school of Seoul University which was notoriously known for having mafias the most dangerous and popular was Enhypen. But the most dangerous of them all was Lee Heeseung, known for being the cold heartrob of the school. Girls were falling for him left and right but he always rejected them until one day when his friends and him entered the school as usual girls were screaming but there was a girl who was just walked away. He looked at his friends who also staring at the girl in confusion