In a world where the supernatural lurks in the shadows, an elite group strives to maintain the balance between good and evil. At the center of this battle is a strange being, a red demon with horns, who was summoned from hell during World War II by a dark villain seeking to take over humanity. Raised on Earth by a professor, this peculiar hero becomes the special agent for the Paranormal Research and Defense Office.
With a touch of humor and a genuine heart, he faces demons, mythological creatures, and an ancient resurgent threat that seeks to free its evil master. As he deals with external dangers, he also struggles with his own identity as a monster in a world that often sees him as a threat. Although he has an intimidating appearance, his essence is more human than that of many around him.
With the help of a couple of inseparable allies, a special agent and a psychic, Hellboy embarks on a mission to stop a powerful witch and her horrifying creatures that threaten to decimate humanity. Through dark landscapes and a narrative filled with action and emotion, the battle will not only be against the forces of evil but also against prejudice and his quest for acceptance in a world that does not understand him. The line between monster and hero blurs, leaving the audience wondering who the true villain is in this thrilling story.