Dark fairy-tale about a demonic doctor who abducts a beautiful opera singer with designs on transforming her into a mechanical nightingale.

Felisberto Fernandez is a piano tuner of exceptional skill, hired by Dr. Emmanuel Droz to come to a remote clinic to clean and refurbish Droz's seven automatons, elaborate mechanical constructs. Droz wants the work done quickly, in time for an opera he's staging for himself. Fernandez's attentions are captured by two women at the clinic, Assumpta, the clinic's manager, and Malvina van Stille, a patient who is also a superb singer. Fernandez works on the machines and is drawn to the women while Droz may be manipulating more than the automatons. Do emotions and choice play any part, or it is all opera?—<[email protected]>

On the eve of her wedding, the beautiful opera singer Malvina is mysteriously abducted by a malevolent Dr Droz. Felisberto, an innocent piano tuner, is summoned to Droz's secluded villa to service his strange musical automatons. Little by little Felisberto learns of the doctor's plans to stage a "diabolical opera" and of Malvina's fate. He secretly conspires to rescue her, only to become trapped himself in the web of Droz's perverse universe.