Aria, a pure, modest and beautiful young woman known as the "Princess of Suzuran," is also a jewel thief causing a stir in the royal capital. Raoul, known as the "Holy Knight of the Blue Moon" for his ruthless and impeccable behavior, is the first to discover the thief's true identity...? The battle begins between the slovenly daughter who never wants to be caught and the knight who will never let his prey escape!