Spain 1981 - the Franco slumber is about to heat up when innocent virgin Sara plunges into the raucous world of El Calentito, an underground nightclub exploding with punk rock and sexual liberation. The club showcases the all-female band Las Sioux led by the beautiful Carmen and super sassy, often topless Leo. When a third member of the group leaves, the band members convince Sara to join them, encouraging her to toss away her conservative upbringing and embrace a life of rock and roll. But as Sara prepares to take center stage and the Spanish government is on the verge of collapse, the naïve virgin discovers an opportunity to start a revolution on stage.