In XVII century Portugal two friends change identities so one of them can escape an unwanted marriage to Beatriz.
as D. Luis de Meneses
as Beatriz de Mascarenhas
as Inês, criada
as Clara
as Don Estevão de Portugal
as Calderón de la Barca
as Cartero
as Gonçalo, sirviente
as Don Álvaro de Mascarenhas, padre de Beatriz
as Don Francisco de Mendoça
as Don Luis de Meneses