A folklore professor becomes unwittingly possessed by the ancient Japanese demons of Thunder and Lightning. But when the Bureau of Paranormal Research and Defense dispatches a team of agents to investigate, a cursed samurai sword sends Hellboy to a supernatural dimension of ghosts, monsters and feudal mayhem. Now while pyrokinetic Liz Sherman and fishboy Abe Sapien battle one very pissed-off dragon, a lost and cranky Hellboy must find his way home. Even if he can survivan the perilous journey, how much crap does a guy have to put up with from the two most vengeful and ferocious spirits of Japanese legend?