Five unrelated incredibly brutal criminals on death row spontaneously leave the same message for the guards, escape incarceration and head for Tokyo to take part in the ultimate fighting tournament.
While Baki Hanma easily subdues the thugs hired by delinquents from his own school, death row escapee Spec pays a visit to assess the champion's abilities.
Death row escapee Dorian barges into the Shinshinkai Dojo and starts a brutal attack on Katsumi Orochi. Then all convicts comes to the Underground Arena.
With all five death row escapees and their opponents assembled inside the Underground Arena, Mitsunari Tokugawa officially declares the beginning of battle.
While out with Kozue Matsumoto (girlfriend of a the main character), Baki Hanma is almost ambushed by Spec, but he' s spared a fight when Kaoru Hanayama suddenly appears to protect the couple from harm's way.
Spec unleashes moves lethal enough to take out even the strongest of opponents in one strike, but Kaoru Hanayama counters with improbable moves of his own. Spec finally tastes defeat.
Ambushed by Hector Doyle while in class, Baki Hanma leads Doyle away from the classroom only to encounter Ryuukou Yanagi in disguise outside. Yanagi made Baki unconscious.
Doppo Orochi pummels the life out of terror-stricken Kaiou Dorian before bringing the equally injured Kiyosumi Katou over to administer the finishing blows. Dorian finally acknowledges that what is defeat as he wished.
The deadly fight between Koushou Shinogi and Hector Doyle reaches its spectacular climax. Meanwhile, Yuujirou pays a visit to an unsuspecting Baki and Kozue.
After setting off an explosion inside Shinshinkai's dojo, Hector Doyle is confronted by its founder, Doppo Orochi. Later Mitsunari Tokugawa pays a visit to Kunimatsu, a master of Ryuukou Yanagi.
Mitsunari Tokugawa learns of the Poison Hand: the ultimate killer move of the "Way of the Void" martial art form. Baki Hanma takes the next step in his relationship with Kozue Matsumoto.
A newly invigorated Baki Hanma easily handles attacks from both Ryuukou Yanagi and Sikorsky, but before finishing them off, Baki makes an unusual move.
Sikorsky faces Gaia in the underground arena in front of an audience. Gaia's unorthodox fighting method slowly wears out the ruthless Russian killer who finally admits defeat and asked for mercy.
Ryuukou Yanagi tasted defeat. At the time, Baki Hanma slowly dying because of the poison from Yanagi. Mohammad Alai Jr appears for the first time and visits Yuujirou Hanma.
