Antonina Miliukova is a beautiful and bright young woman, born in the aristocracy of 19th century Russia. She could have anything she'd want, and yet her only obsession is to marry Pyotr Tchaikovsky, with whom she falls in love from the very moment she hears his music. The only reason the composer will finally accept this union is to put an end to rumors about him. Feeling no love, and blaming her for his misfortunes and breakdowns, Tchaïkovsky's attempts to get rid of his wife are brutal. Consumed by her feelings for him, Antonina decides to endure and do whatever it takes to stay with him. Humiliated, disgraced and discarded, she is slowly driven to madness.