When shy Ako finds her family brutally slain, she can't help but freeze in fear at the sight of blood-thirsty vampire Kou! But when Kou's bite yields a surprising rush of pleasure, he decides to take the timid girl back to his lair and make her his servant. Now Ako wanders the city streets in a daze, thirsting for warm, sweet blood... Can a young girl learn to wield her strange power in the face of a legendary coven? And will her own flesh and blood help her find her way back home?