A family gathering in Greece devolves into deception, incest, and quite a lot of murder.

A young man meets up with his new stepmother, and his father is also supposed to join them for a holiday but never shows up. Suspicious of his step-mother, he then proceeds to keep her a prisoner in the villa as he forces her to reveal details of her hidden past.

When a raiding party from the city of Atlantis kidnaps a man and his two daughters for slavery, he contrives to bring about the destruction of the ruling class utilizing the powers of the mysterious crystal child.