The Nazis resort to black magic to win at the end of the Second World War. As a result of the developing events, an unknown demon passes into the world from the other side. Counter-force soldiers raiding the location of the Nazis find this demon and name it Hellboy. Little Hellboy is raised by his father for good, and when he grows up, he begins to serve good instead of evil. But there are many different reasons behind Hellboy's birth.