1943 film by Miguel M. Delgado, Fernando de Fuentes

Fisherman Quino and his wife Juana are very poor and desperate because the town's foreign doctor refuses to treat their son Coyotito, who has been bitten by a scorpion. When Quino unexpectedly finds a magnificent pearl in the sea, Juana senses that the discovery will only bring them misfortune and tries to convince her husband to return it to the sea.

A young woman, abandoned by her womanizing fiancé, is forced to provide for the upbringing of her son and combat the difficulties of being an unmarried mother during the strife of early 20-century Mexico.

An American insurance adjuster, stranded in Havana, becomes involved with an archaeologist and a collector of antiquities in a hunt for treasure in the Mexican ruins of Zapoteca.