1973. Uruguay is governed by a military dictatorship. One autumn night, three Tupamaro prisoners are taken from their jail cells in a secret military operation. The order is precise: "As we can't kill them, let's drive them mad."

Under Madrid's scorching summer sun, ordinary couples with real passion and the unquenchable desire to love and be loved, share the same irrepressible urge to investigate their own sexuality through five intertwined stories.