A princess and prince, living with the opposite side, The dark side and the good side. A prince who's born to used his mother against adversary, and to siezed the most powerful crown, a elemental crown carried by the king, to ruled the whole kingdom. A princess who is crown to be a queen when she was born. But something happaned a havoc, the king force to send her to a mortal world, afterward she returned, as an ordinary, camouflage being a sister of the Chief of a royal guard. A princess and prince with different races...