After Nathalie Baldassar has murdered her husband so she is sentenced to ten years imprisonment. She is tortured, humiliated and beaten in prison every day to the point that she becomes completely unstable and begins to murder a bunch of people once she is released.

Fleeing the police after a bank robbery that went wrong, a group of offenders decides to take refuge on a deserted island. The apparent tranquility of this place actually hides a horde of demonic creatures desperate to satisfy their cannibalism and carry out their mission: to impregnate women with the seed of the devil, and enslave men. One after the other the criminals will be hunted down, abused, murdered; and this island, meant to be a peaceful refuge, will become their tomb.