Mai and Ai Amatsu, the popular "Twin Dolls" of Tenjin Academy, are the heirs to a sacred priestess tradition. When the demon prince Hakumouki exploits a student's jealousy to launch a brutal attack, the twins are captured and subjected to demonic torment. However, by unleashing the power of the Dance of Celestial Raiment, they manage to defeat the invaders, though they are warned that a far greater evil is soon to be reborn.