Mad scientist Frankenstein (Aden Young) created Adam (Aaron Eckhart) from different body parts, but lost his trust. After burying Frankenstein, Adam was attacked by terrible demons. At the critical moment, he was rescued by a group of mysterious warriors, who were the little-known nocturnal dragons, and had been fighting the terrible purgatory demons for a long time. At the request of Queen Lenore (Miranda Otto), Adam, who once hated humans, joined the battle group to exterminate demons. For more than two hundred years, he wandered around the world, just to take the initiative and get rid of the demon leader Prince Naberius (Bill Nighy). The all-out war between angels and demons kicked off, and Adam played a pivotal role...