Spain, 19th century. In a small coastal village, Olalla and her family prepare to live a very special night, during which it is mandatory to comply with a single rule: no light must remain on.

Spain, 2024. After a scandal involving Alfonso XVI damages the monarchy's reputation, the king temporarily takes a backseat and his daughter and heir to the throne of Spain, the irresponsible Princess Pilar, takes over the monarchical institution to show that she is up to the task.

Spain, 1981: When armed men hold up a bank and take hundreds hostage, a reporter races against the authorities to uncover the true motive for the heist.