In "Singular Occurrence", Machado de Assis creates an engaging narrative through a conversation between two friends. One of them tells the story of Marocas, a woman who has caught the eye of Andrade, a young lawyer. The plot explores Andrade's growing obsession with Marocas and how his intense emotions make him question his choices and convictions. The story is marked by reflections on desire, jealousy and the ironies of life.