Single and attractive Laura Siprien adopts young Mongloid Liu-San and takes him home to her apartment in France. A few years later, she takes him for a medical examination after she finds a bruise on his chest. The examining doctor assures her that the bruise is not serious and will disappear in due course. When she decides to travel, she leaves Liu-San with her friend, Sybille, but finds out he has smuggled himself in the backseat of her car. It is after this discovery that her life will be shattered, and Liu-San will be abducted and taken to a secret location in Mongolia where a cult will prepare to sacrifice him in order to attain immortality.