Daehyun is a new student in a school.On the first day he at school he received a warning from Yongguk group.Yongguk is a master of gengster in his school all student  are afraid of his geng.But the school was protected by Yumna a former hapkido student.Daehyun were saved by yumna when he was bulley by yongguk geng.Then they be a good friend.Within a week yumna were kipnap by yongguk.Daehyun were suspicious then he followed yongguk till he were biring to a big old ware house and he find out what yongguk doing at the old ware house. -the description will be continued when the fanfic is finished-