Hellboy travels to Japan to fight an ancient demon.

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.—yusufpiskin

A professor of folklore opens a forbidden scroll and becomes possessed by the ancient Japanese demons of Thunder and Lightning, who seek to return and dominate our world. The Bureau for Paranormal Research and Defense sends Hellboy and a team of agents to investigate, but when Hellboy picks up a samurai sword, he literally disappears into a weird wonderland of Japanese legends, ghosts and monsters. Meanwhile, BPRD agents Kate Corrigan and Russell Thorne are on the trail of the possessed professor to bring Hellboy back.—IDT

A university professor reads a forbidden scroll and becomes possessed by the twin demons of Thunder and Lightning. The demons want to come to the human world to awaken their brothers, the dragons. Hellboy and company travel to Japan to investigate where Hellboy finds the Sword of Storms which transports him to a world of Japanese folklore.—Martian-5