Their father, emulating his illustrious ancestor, dies at the beginning of the film in Cuba, which is still a Spanish colony, in a suicide mission against the United States Navy.

Pedro, unlike his brother, becomes a deputy Republican and requires his share of the family inheritance quickly, to cover the costs of his political career.

Jose gets into the Nationalist area, with the help of a dentist who had a "bad past" in leftism, "which gave him influence in that corrupt society."

José avoids this, and soon resolves the situation with a happy ending: Nationalist troops defeat the International Brigades who defend the capital of Biscay, and the family meets.

Pedro confronts the prejudices of a man who has a bad appearance and worse manners, who argues that someone with the surname Churruca can not adequately serve the cause of the Republic.

Pedro does not know it yet, but moments later prove that the militiaman was right: a woman visiting him, asks him to provide her with a copy of the status of forces on the front lines of Aragon to give to the nationalists.

The film closes with the surviving Churruca family members attending the parade of victory in Madrid, chaired by Franco.