You are a new student at a popular school, but there is a circle of bullies there. When you come home from school you see a student beaten up by them behind the school, because the place was quite quiet.

when you were about to help the student, one of the bullies grinned and said "oh, next you are our prey."

Your heart is pounding, but you have to save the student because of humanity. when you were about to be hit, suddenly someone come to help you. he is Yeonjun.