Based on "Lady Windermere's Fan" by Oscar Wilde. The story of a woman who saves her daughter from making the same mistake that cost her happiness years ago.
Juan Carlos Thorry is a police inspector who must solve the mystery of the death of the warden of a boarding school for young women, for which he goes undercover as a music teacher. The main suspect is the mischievous schoolgirl María Duval. A series of entanglements leads the protagonists to becoming romantically involved and to finding the culprit.
When the employee of a famous economist seeks a raise in complicity with a street vendor, her work learns real-life facts by trying to prove that you can live with what you pay.