Kim Ui Gyeom is the top student at his school. He is a modest student and stays far away from violence. He suffers from his father, Kim Seok Tae's, oppression. Kim Seok Tae is a successful businessman, and he appears to be a gentle father and husband, but he is actually strict and administers harsh discipline to his son in order to make him a doctor.One day, Kim Ui Gyeom unleashes his natural fighting talent at school. Kang Yun Gi, with the ability to quickly judge situations and possessing excellent fighting skills himself, is a student at the same school. He notices Kim Ui Gyeom's fighting talent. They form a masked High School Heroes team. Hiding his real intention, Kang Yun Gi leads Kim Ui Gyeom to the fighting world. Kim Ui Gyeom unleashes his fury, taking down the bullies at school one by one.(Source: AsianWiki; edited by MDL)~~ Adapted from the webtoon “ONE” (원) by Lee Eun Jae (이은재).