Since birth, Baki Hanma has known only fighting—strengthening every muscle and learning various martial arts techniques under the supervision of his mother, Emi Akezawa. He trains to prepare himself to face and eventually surpass his father, Yuujirou Hanma, a man feared by the masses as the "Ogre" and regarded as the strongest being in the world. However, when Baki realizes his mother's techniques are no longer sufficient, he sets out to become stronger in his own way. Seeking out powerful opponents and forming unbreakable bonds with them, he continues to grow both in body and soul, as the clock ticks closer to the inevitable showdown against his father...