1913. The entire world is on the brink of the abyss, but there are havens of peace isolated from conflicts. Like La Promesa Palace, in the Los Pedroches valley, property of the Marquises of Luján, one of the largest landowners in the country.

That day the Palace dresses up to celebrate the wedding of the heir, Tomás. Just after the party, the appearance of an airplane attracts everyone’s attention. It is piloted by Manuel, son of the Marquises. Suddenly, the device loses altitude until it crashes. Manuel is about to be consumed by flames; but someone manages to save him: Jana.

Can love quench the thirst for revenge? Could you forget those who ruined your life? Your mother’s murderers? Those who made your brother disappear? A woman, revenge and a great love story are the ingredients of ‘The Promise’.