It's the 19th century, and the world has entered the Era of Rebirth, recovering from the devastating flames of war. The sport of Mechanical Martial Arts has galvanized the nations. Cybernetically augmented fighters turn their blood into steam and their bodies into brutal fighting-and killing-machines. Young Levius is one of those arena battlers, hell-bent on winning in order to simply survive. Having fought his way into the top grade of Mechanical Martial Arts, Levius faces an ever-changing world that grows more threatening by the day. The shadowy megacorporation Amethyst wields its military might across the world through advancements in the arena. Can Levius be the fighter who changes the course of the world's fate?