Glória takes place in the 1960s, at the height of the Cold War, in the small village of Glória do Ribatejo, where RARET is located, an American broadcasting center that broadcasts Western propaganda to the Eastern Bloc. João Vidal, an engineer from families linked to the Estado Novo, but recruited by the KGB, will take on several high-risk espionage missions that could change the course of Portuguese and world history.