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After getting lost on a sea excursion, Jô Penteado and Fábio Coutinho develop mutual feelings during the two months they spend stranded on a deserted island.

Determined to secure the release of her father—imprisoned for advocating communism—Sílvia travels to Rio de Janeiro, where she finds work as a chorus girl at the Cassino da Urca. There, she meets and falls in love with a croupier named Tide. Sílvia becomes a celebrated beauty of Rio's nightlife but is blackmailed by a Nazi named Jofre; he promises to help free her father if she marries Michael, an Englishman from whom Jofre intends to steal a map to a uranium mine.

When accused of disobeying Church norms and having his priestly rights suspended, Father Cícero intensifies his political activity in fulfilling his pastoral mission.

Severino do Quixadá (Renato Aragão), a humble northeastern shepherd of goats, rescues Captain Virgulano or simply Captain (Nelson Xavier) and his band of cangaceiros of an ambush armed by the lieutenant Zé Bezerra (Jose Dumont), its eternal persecutor. Captain escapes taking with him the mysterious box that he removed from the interior of the assaulted train in the city of Cajarana. Seeking to escape the shooting, Severino ends up finding himself in the cangaceiros' camp, along with the mishap friends Mussum and Zacarias who, taking advantage of the confusion, fled the chain.