Count Maximilian discovers Klara in a Nightingale Cage, an orphanage for the abandoned children of musicians. He educates her, fosters her remarkable vocal talent and initiates her into the art of love, creating the perfect mistress. The Count controls every aspect of Klara's life, until fate, in the form of handsome Akos Almassy, takes a hand. The tall, dark Magyar violinist can make beautiful music and healing potions, too, but can he rescue Klara from the Count and live?