In a village in the mountains of Urbión, brothers John and Martin, driven by greed and abetted by Candelas, Martin's wife, kill his father and sink the body in the Black Lagoon. His wife and one daughter of the victim does not know anythin...
En un pueblo de la serranía de Urbión, los hermanos Juan y Martín, movidos por la codicia e instigados por Candelas, la mujer de Martín, asesinan a su padre y hunden el cuerpo en la Laguna Negra. Su esposa y la otra nuera de la víctima...