An extremely famous, rich, talented maestro divides his obsession for music with the sickly love for his muse Laura Martin, a prostitute. This woman, a beautiful musician, transcribes all of the conductor's compositions. A relationship of seduction and possession is born between the two, hampered by his marriage to Raquel, a woman who struggles to understand her husband's wishes. The wife submits to the love triangle and his wishes for getting to live with her in the same residence instead of losing him. But the trio's delicate synergy is broken when the lover develops a degenerative disease and is welcomed by the couple. But isn't Laura Martin just an imaginary being?