Hercules is summoned to oppose the evil Queen Samara, who has allied herself with aliens and is sacrificing her own people in a bid to awaken a moon goddess.
Harald and his brother Guntar return to Norway to find their father murdered and his throne usurped. They try to take revenge on Sveno, but a traitor amongst them puts both brother's lives at risk.
This film features a colossal clash between a mass of invaders and the faithful Roman soldiers who must fight to defend the Roman Empire.