Charles Frieth, pre-eminent composer, conductor and prodigious womaniser, is preparing for a performance of one of his early works, and the world premiere of Demonic Aubade. Obstinate and myopic, he is oblivious to the growing turmoil around him; his wife's poor health and sadness; the exhausted efforts of his secretary, and the destructive passion of his housekeeper, Maria. As the first performance draws near, the maestro is suddenly awoken to the chaos, and as Charles struggles to regain control of his life, a terrible tragedy begins to unfold.