"Fist of the North Star 2," also known as "Fist of the North Star: The Legend of Raoh," continues the post-apocalyptic saga set in a world devastated by nuclear war, where survival is a daily struggle. The series focuses on Kenshiro, the successor of the deadly martial art Hokuto Shinken, as he battles to protect the innocent and uphold justice in a lawless wasteland. The narrative delves deeper into the conflict between Kenshiro and his estranged brothers, particularly Raoh, who seeks to conquer the world and establish himself as a god-like ruler.

Raoh, the eldest of the Hokuto brothers, emerges as the central antagonist, driven by a desire for absolute power. His ambition leads him to amass an army and challenge Kenshiro, believing that only through domination can he bring order to the chaotic world. Kenshiro, bound by his sense of duty and compassion, opposes Raoh's tyrannical vision, setting the stage for a climactic confrontation. The series explores themes of brotherhood, sacrifice, and the moral complexities of power, as Kenshiro grapples with the necessity of defeating his own kin to save humanity.

Supporting characters play pivotal roles in the narrative. Toki, the second eldest brother, represents a pacifist philosophy, advocating for healing and peace despite his mastery of Hokuto Shinken. His ideals contrast sharply with Raoh's ruthless methods, creating a moral dichotomy that underscores the series' central conflict. Other characters, such as Rei, Mamiya, and Bat, continue to aid Kenshiro in his quest, each contributing their unique skills and perspectives to the struggle against Raoh's forces.

The plot is driven by intense martial arts battles, characterized by the signature Hokuto Shinken techniques that target pressure points to cause devastating effects. These confrontations are not merely physical but also symbolic, reflecting the ideological clashes between the characters. The series builds toward a dramatic resolution as Kenshiro and Raoh face off in a final battle, with the fate of the world hanging in the balance. The narrative concludes with a poignant exploration of legacy and the enduring impact of one's choices, leaving a lasting impression on the post-apocalyptic world and its inhabitants.