A folklore professor becomes unwittingly possessed by the ancient Japanese demons of Thunder and Lightning. But when The Bureau of Paranormal Research & 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.

When Hellboy, Liz Sherman, and Abe Sapien are assigned to investigate the ghost-infested mansion of a publicity-hound billionaire, they uncover a plot to resurrect a beautiful yet monstrous vampire from Professor Bruttenholm’s past. But before they can stop her bloodbath, Hellboy will have to battle harpies, hellhounds, a giant werewolf, and even the ferocious goddess Hecate herself.

In Ireland in 1961, Hellboy enters a ruined tower and is attacked by Iron Shoes.

When our favorite half-demon falls into an ancient ruin, he must wander through a spooky cavern which houses a mysterious monster.