In the 60s, a new music genre that was already revolutionizing the world, pop, made its arrival to Spain. Maribel Campoy, a 19-year-old girl developed at the Music Conservatory, sees herself in charge of a new musical brand that will change the rules of the game. Alonside her boss, Guillermo Rojas, and Roberto, a young singer uncovered on the scenarios of the "Matinales" of El Price, Maribel will shed light to a new way of understanding the musical panorama. Three characters that will see themselves involved in a love triangle in an age and social frame where the police charged against anyone who tried to revolutionize the country.