Northern Spain, October 1944. Several groups of guerrilla fighters, former Republican soldiers exiled in France after the end of the Spanish Civil War, infiltrate the country in order to provoke a popular uprising against General Franco's dictatorship.

Elena & Mario have a daughter who suffers from a serious illness. In order to survive, she will need a transplant from a genetically compatible sibling. After a number of unsuccessful pregnancies, Elena is expecting again. This time, everything is going well; but loneliness, and the fear of losing her husband's love will push Elena deep into the abyss.

Irene and Sergio arrive home in a huff after spending the night out. The two of them get into a shouting match. Suddenly, they're interrupted by the sound of their door opening. Does anyone else have the keys to their home? No, just them.