Born with the tragic fate of being pure-blooded from the Ma family, destined to become bald on his forehead, here is Mabak! Although Mabak is not very handsome, he is a 17-year-old handsome boy with a warm heart. After his only family, his grandmother, passed away, Mabak transfers to Seoul and falls in love at first sight with 'Yuri', a girl from the same school. He enrolls in 'Murim Kwan', a martial arts dojo run by Yuri's brother. However, Mabak accidentally puts 'Murim Kwan' in danger, and to save Murim Kwan, he must learn the legendary martial art 'Ima Gwon'... Will Mabak be able to become the 'T1 Champion', save Murim Kwan, and win Yuri's heart?