After a tragic accident in a martial arts tournament leads to the death of his opponent, Hatta is devastated and decides to leave competitive fighting behind for good. He wants nothing more to do with tournaments or the violent world surrounding them. But his peaceful life is shaken when his beloved sister becomes seriously ill and needs expensive medical treatment that he cannot afford. With no other way to pay for her care, Hatta receives an offer from a powerful mob boss who promises financial help in exchange for his return to the fighting world. Forced to choose between his principles and his sister’s survival, Hatta enters a dangerous underground fighting circuit where every match could cost him far more than he is prepared to lose.