Living up to his name as the son of the greatest grapplers of all time, Hanma Yujiro, Baki is a formidable fighter. He must prove his worth at the Shinshinkai Organization's exclusive arena where the competition is ruthless and unfavorable odds are the norm. As the reigning champion of the underground tournament, Baki battles to maintain his title against the world's most skilled and powerful martial artists - amongst them, his father Yujiro who is also known as "the beast."