A young boy known as the Avatar must master the four elemental powers to save a world at war — and fight a ruthless enemy bent on stopping him.

Long ago, in the fantasy world of Kumandra, humans and dragons lived together in harmony. But when an evil force threatened the land, the dragons sacrificed themselves to save humanity….

Long ago, in the fantasy world of Kumandra, humans and dragons lived together in harmony. But when an evil force threatened the land, the dragons sacrificed themselves to save humanity….

Hellboy comes to England, where he must defeat Nimue, Merlin’s consort and the Blood Queen. But their battle will bring about the end of the world, a fate he desperately…