In the run-down slums of a futuristic city, the boxer only known as Junk Dog is making a living throwing fights for the mob in underground arenas. That all changes when he has a chance encounter with the champion, Yuri.

Joe has risen to the top and finally gets his chance of a rematch with Yuri. Yuri himself also feels joy in his chance to fight with Joe. The final battle begins!

Years after his victory at Megalonia, Joe has become a completely different man, going from one underground ring to another, now fighting as the wandering boxer Nomad.