Concepcion de la Playa Setta, an Andalusian noblewoman, the daughter of the provost marshall of Flanders, is in love with the Duke Philippe de Hornes. He is a Brussels gentleman in revolt against her people, the Spanish occupiers. When her rebellious lover is hurt during an uprising against the troops of Philip II, Concepcion takes him in in her house. And she personally defends him when, at his trial. Condemned to be hanged through the intervention of the Duke of Alba, de Hornes is eventually reprieved by the new governor and set free. The two lovers meet again and can live happily from now on.