Long ago, there existed a household that wielded great sway over the governance of the Imperial Court. They possessed a unique power known as "Kidou," yet it was precisely that power which made them the object of hatred. In time, the head of the family was ensnared in a trap and met his end, and the entire lineage was driven to utter ruin. Now, in the present era, the surviving heirs of that bloodline—who now call themselves the "Kidousyuu"—have set in motion a scheme to bring their slain patriarch back to life, and a fierce and malevolent curse begins to stir.