Ver Cuevana 3. In the tumultuous Mexico City of 1968, Edel, the youngest son of a family, witnesses an event that will change his life forever. Before the student march, he observes his mother hiding a firearm in a drawer while scolding his brother. This revealing incident becomes a recurring memory for Edel, resurfacing at the most critical moments of a night filled with tension and decisions that will define his destiny.