In this continuation to the adventure of the demon superhero, an evil elf breaks an ancient pact between humans and creatures, as he declares war against humanity. He is on a mission to release The Golden Army, a deadly group of fighting machines that can destroy the human race. As Hell on Earth is ready to erupt, Hellboy and his crew set out to defeat the evil prince.
A prince of the mythical world starts a rebellion against humanity in order to rule the Earth. Hellboy and his team must fight to stop him from locating the all-powerful Golden Army.