Set in 2010, the story takes place on the eve of the arrival of Pope Benedict XVI to Santiago de Compostela. Rosa Vargas is a rookie police officer of the Spanish Civil Guard who arrives at the small interior Galicia town of Murias to face her first case, in which she must investigate the disappearance of a young girl named Marta Labrada, lost under strange circumstances. Although everything points to Marta leaving the town on her own, Rosa goes further and discovers a dark secret that surrounds the small town of Murias and the investigation discovers a series of crimes that had remained hidden in the village "where nothing ever happens".