At 19, Deni Prieto Stock joined a guerrilla group and, four months later, on February 14, 1974, was murdered by the Mexican army in Nepantla, Mexico State together with four companions. A series of testimonials allow us to get to know the family and social circumstances that influenced Deni 's path; we also discover the ties of love and friendship she found in the safe house, her daily life in the underground and the discipline and aspirations she shared with her fellow guerrillas.