Hiro Enryuu, an ordinary elementary school student, is unexpectedly pulled into the world of the Dragon Collection game. Called Dragon Earth, it is a land shared by gods, humans and monsters. There, Dracolle Battlers travel with a magic book known as a Grimoire, using cards to call forth monsters and hunting for treasures that hold dragon power. Confused at first, Hiro becomes a Dracolle Battler himself and sets off with the companions he meets, aiming to become a Dragon Master of legend. The 51 short episodes of this 2014 series mix action, adventure and fantasy.