A stroll of jealousy, situated in a working class milieu, on the bloody banks of the river of gold. An old couple get married: she is a level-crossing keeper and he is the owner of a dredge boat. Mélita, the niece, falls in the water and shouts for help. Antonio saves her life and Carolina mopes with jealousy. On a train, Zé, a goldsmith and gypsy visionary, tries to sell Mélita a gold necklace. Unfortunately he "sees" the innocent girl's past life: she is said to have killed her lover and painted their love chamber with his blood. Terrified, Zé flees. Carolina runs after him, steals the necklace and becomes his mistress. She wants him to tell her this terrifying secret.