La Promesa (English: The Vow) is a Spanish period television soap opera, based on an original idea by Josep Cister Rubio.

Set in the fictional country estate of La Promesa, it depicts the lives of the aristocratic family of the marquises of Luján and their domestic servants, beginning in 1913.

In 1913, Jana Expósito arrives in La Promesa palace (located in Los Pedroches) hellbent on avenging the death of her mother and on finding about the whereabouts of her younger brother.

Meanwhile bridegroom Tomás (the first born son of Alonso and the person willing to share information with Jana about her family), is stabbed by his stepmother Cruz Ezquerdo, Manuel's mother.

[10] Mediaset purchased rights to La Promesa in Italy, with the series debuting on Canale 5 on 29 May 2023 with positive viewership figures.