The plot begins in 1975 with the death of Paulo Alberto, a criminal who leaves his mistress Marluce a watch containing diamonds from his last robbery. Corrupt police officer Tito Lívio and serious Lucena are tasked with finding the jewels. Meanwhile, at Ilha Grande Prison, Jorge Fernando, Paulo Alberto's cousin, is detained. He wants to recover the diamonds and now commands the faction. While searching for Marluce, Tito Lívio is investigated by prosecutor Álvaro and later arrested in Ilha Grande...