1976. Young socialist Aldo Marín flees Chile with his best friend El Chapa and finds refuge in Turin, Italy, where he meets Luciana, a doctor who performs clandestine abortions. Disenchanted with the revolutionary social fight, Aldo tries to build a new life for himself, but he has a special talent that is also his doom: he knows how to craft bombs. Aldo and Luciana's destinies become always more intertwined during what will be remembered as the hottest autumn of terrorism in Italy, while old friendships and new loves will be harshly challenged.