In the hard and convulsive times of the Spain of 1921, Aníbal Uriarte is a veteran soldier of the Morocco War reconverted as cop who is send by his superior from Spain's capital Madrid to Barcelona (Catalonia, north-east to Spain) in order to locate an important amount of military weaponry from a train, stolen apparently by revolutionary anarchists. To his arrival to the city Uriarte meets Inspector Rediú, a corrupt officer together the violent Tísico and young Beltrán, and El Barón, owner of the famous cabaret Edén where he exploits to his dancers as Lola, filming in addition adult movies implying minors and lesbian women only for the high society's eyes. At the same time Salvador Ortiz is the leader of a peaceful riot in an important company of the city, in the fight by the workers' rights, and Salvador's daughter and telephone operator Sara leads her own revolution to defend women's rights. Learning quickly to move in a sea of conspirators, corrupts and traitors, Uriarte makes a ...