The hot air, damp rot and isolated monotony keep the men at an African plantation either drowning in drink or at each other's throats with frayed nerves. But the tropical temperature reaches white heat when she appears. The cocoa-skinned, sarong-robed, half-caste temptress Tondelayo is a force of nature against whom red-blooded males have no chance. Despite the warnings of his brutish, cynical supervisor, the settlement's doctor and the local missionary, the rubber outpost's newest arrival falls under the voluptuous siren's spell and they wed. But soon it becomes an unholy union headed toward a murderous end.