An anime adaptation of Majin Bone, a digital card game project. Majin, the creator of the Universe, has been resurrected in the present day. Shougo Ryuujin, an ordinary high school student, transforms into the Bone Fighter Dragonbone using a Bone Card to save Earth. Alongside the other White Bone warriors, he stands against the Dark Bone, an enemy emerging from darkness to devastate Earth. However, "could the true enemy be ourselves?"