Juan Claudio Lechín

A schoolteacher in the small city of Santa Cruz de la Sierra has a passionate affair with his frigid wife's sister—despite the risk of having to confront not only his wife, but also his dubious father-in-law.

In 1995, several cargo containers are discovered high in the Bolivian Andes. Inside are potentially toxic chemicals, and local policeman Mariscal soon becomes charged with the task of smuggling the containers into neighboring Chile. He recommissions an old train to haul the toxic waste out of Bolivia, but encounters one mishap after another, beginning with the local townspeople who know what's inside, halting the train's path.