In the first quarter of the XXIth Century, wealthy and corrupted space anthropologist Henderson James owns a forbidden and dangerous species: the Megasoid. The beast runs from its cage and hides in a zoo. Henderson James decides to make an illegal duplicate of himself to chase the monster. The look-like meets the wife of Henderson and understand each other very well because the clone displays the lost affection of the original man. Unfortunately, the real husband is killed by the creature and the human copy will die at midnight owing to a control poison in its bloodstream.