Don Juan is dying. The doctor has granted him one last day of life. He dies in solitude, with only his faithful servant Leporello at his side. Don Juan wants to confess to free himself from his sins.
No priest wants to hear the sinner famous throughout Spain. Only a young monk accepts. And fate allows him to know Don Juan's secret. It turns out that Don Juan has not been the lover of any of his wives in the common, carnal sense of the word. Furthermore, he cannot physically indulge in the pleasures of the flesh.