The Majin Bone project, initially a digital card game, has now been transformed into an anime series. Its plot revolves around Shougo Ryuujin, a high school student who has the ability to metamorphose into the legendary Bone Fighter Dragonbone by using the coveted Bone Card. As a part of their mission to save the planet, Shougo and his fellow White Bone warriors band together to combat the Dark Bone, a powerful adversary responsible for creating chaos. However, as the war progresses, they begin to speculate if their actual adversary is not the Dark Bone, but rather their own personal struggles.