Baki Hanma, after winning a brutal underground tournament, sets his sights on defeating his father, Yuujirou, the world's strongest man. However, his victory is short-lived as Tokugawa Mitsunari, the tournament's organizer, visits him at school to warn him of five dangerous death row inmates who have escaped confinement and are on their way to Tokyo. Each of them is skilled in martial arts, and they are all eager to experience defeat. Tokugawa tells Baki that with his known strength, he will inevitably come across these inmates and become a target. The first saga of the second manga series centers on the battle between the respected martial artists of Japan and those of the underground world.