Yabo Morgan, an African-American boxer, finds himself completely alone in a distant, unfamiliar time and place. Just before tragedy struck, Yabo was at the height of his happiness. With the support of his family, he realized his dream of becoming a professional boxing champion. But the moment he held the championship belt in his hands, proof of his success, Yabo was overcome by an intense headache and lost consciousness. Yabo woke up on a battlefield: flying arrows, sparking swords, splattering blood, screams... and samurai. For some reason, Yabo appeared in the state of war period of Japan.