Joy quickly gives way to sorrow as the end of the Spanish Civil War looms. With help from friends, Guillermo adjusts to a harsh new reality in Madrid.

Guillermo, Adrián and Manuel each encounter a familiar face from their past. While Guillermo takes on a new project, Clara plans for the future.

Margaret's doubts divide her and Manuel as he prepares to leave for Buenos Aires. Guillermo treats a patient and proposes a risky new business venture.

An unexpected visitor creates a painful dilemma for Guillermo, while new romance offers some comfort. Manuel entrusts key intelligence to Margaret.