French people Mario and Jo, Germans Bimba and Italians Luigi are stuck in the isolated town of Las Piedras. Surrounded by desert, the town is linked to the outside world only by a small airport, but the airfare is beyond the means of the men. There is little opportunity for employment aside from the American corporation that dominates the town, Southern Oil Company (SOC), which operates the nearby oil fields and owns a walled compound within the town. SOC is suspected of unethical practices such as exploiting local workers and taking the law into its own hands, but the townspeople's dependence upon it is such that they suffer in silence.