Reluctantly retired from fighting, Rocky takes charge of Mickey's gym and agrees to train a young protégé who's hungry for success.

The film is based on the true story of Zishe Breitbart, a Jewish blacksmith's son from Poland who becomes a sensation in Weimar, Berlin as a mythical strongman. His employer Hanussen dreams of establishing an all-powerful Ministry of the Occult in Hitler's government. Yet as Hitler's hold on power grows more sure, and Berlin erupts in a ferment of anti-Semitism, Zishe must decide how he will use his strength. Plagued by nightmares, he takes counsel from a local rabbi. He becomes convinced that he has been chosen by God to warn his people of the grave danger they face.

Hesitating in the moment he is about to kill the rebel leader, Nikolai fails and is captured. Rather than being killed outright, he is forced to undergo a shamanic initiation ritual. The ingestion of the poison of a local scorpion, and his initiation ceremony, including scarification (a scorpion), give him a new identity and role in the world: the Red Scorpion.