Thursday, September 19, 1985. 7 AM, Mexico City. At the General Hospital, Dr. Ángel is handling a complicated delivery. In downtwon, Camila, an amateur journalist, is working on an independent report. In Tlatelolco, Gabriela heads to work while her husband and children get ready to start the day. The minutes slowly approach 7:19 AM… the hour that changed the course of an entire nation.