In Pamplona, Spain in 1976, the Basque people are fighting against the Spanish government for their rights to autonomy. ETA leader Jaime Miró, along with friends Ricardo Mellado and Felix Carpio, escape from prison, but at the expense of many civilian lives during a sabotaged bull-running exhibit that was used as a distraction from the police. Following the event, the Prime Minister assigns Colonel Ramón Acoca (head of the anti-ETA group GOE) to hunt down Jaime Miró; Acoca’s wife and unborn child were killed in a Basque demonstration assisted by ETA and the Church, so when he suspects Jaime hiding in a convent, he decides to raid it by force despite the implications of it.