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.

A murder pushes Miren Rojo to investigate its ties to a cold-case disappearance, a deadly game and an elite school in Málaga — risking her life again.

Juan, a prison officer, silently observes the visit every Sunday of Berta, mother of one of the imates. The day he finally approaches her, he surprises himself by pretending to be another visiting father and inventing a daughter inside the jail: Josefina. The need to fill the vacuum of their lives prompts Juan and Berta to continue meeting outside the reality around them.