In a dark future, Raoh, a martial arts master with supernatural powers, takes on a violent gang in a battle to the death. With intense violence and brutal fighting, Raoh fights to restore honor in a world devastated by a nuclear disaster.

The film's story is a prequel to the Fist of the North Star depicting the one year interval between Kenshiro's defeat at the hands of Shin and their later battle. Unlike the others in the series this film has a completely original storyline in which Kenshiro, near death after his battle with Shin and having used his remaining energy to kill a pack of wolves, was captured by slavers. Due to his strength, Kenshiro could escape whenever he wanted, but chose to stay and protect the other slaves.

Second part of the new Fist of the North Star movie pentalogy presenting the story from Yuria's perspective, spanning from her childhood, including the day she first met Kenshiro.

Fourth part of the new Fist of the North Star movie pentalogy presenting the story from Toki's perspective, leading up to Toki's imprisonment in Cassandra and eventually his duel with Raoh.

Set in a catastrophic future, Fist of the North Star: Legend of Raoh - Chapter of Fierce Fight follows a martial arts warrior as he fights against evil in a post-apocalyptic world. With fast punches and supernatural powers, he confronts his brother in a battle to the death and uses his superhuman strength to bring justice to a ruined world.