Set in Madrid, between the end of the 18th century and the beginning of the 19th. The Countess of Gualda and the famous songwriter Petrilla are very physically similar, so much so that many people confuse them. But one day they discover that they love the same man, the Marquis of Nuévalos, a terrible rivalry will arise between them that they will resolve based on songs and episodes that recreate Goya's paintings.