Three married couples undergoing therapy are summoned by their female psychologist to a meeting. The psychologist won’t be attending the reunion herself, but she will give to them instructions about what they must do. Thus, to the sound of a horn (literally), the six protagonists will gradually air their dirty laundry concerning their relationships and bring up issues like taking care of the kids, the different home tasks, money, jealousy and sex, until it all leads to a most unexpected and equally shocking end.

Basque Country, Spain, late nineties. A young policewoman manages to infiltrate the ruthless terrorist gang ETA.

Paulino and Carmela are husband and wife, troubadours touring the countryside during the Spanish Civil War. They are Republicans, and with their mute assistant, Gustavete, they journey into rebel territory by mistake. They are arrested, fear a firing squad, and receive a reprieve from an Italian Fascist commander who loves the theatre. He arranges a performance for his troops, bargaining with Paulino to stage a burlesque of the republic in exchange for the actors' freedom. Will the fiery and patriotic Carmela consent?

Hildegart is conceived and educated by her mother Aurora to be the woman of the future, to become one of the most brilliant minds of Spain in the 1930s and one of the European references on female sexuality.