Plot (From the DVD jacket):
In a small town close to the capital lives a family with three siblings: the serious and dominating Ignacia and her timid and withdrawn brother and sister, Paquita and Venancio. The monotonous life of the town is only shattered on Saturdays, when a band from Madrid comes to play their songs for the weekend dance. One stormy Saturday, Paquita and Venancio, frightened by noises, enter their sister’s room. There they think they see a mysterious fourth person. But their sister Ignacia denies it..