Mako, the granddaughter of Rika, must take control of the Silhouette and defeat the assault of other challengers.

Silhouettes are robots controlled by human thoughts, originally created to help mankind. When human thoughts turn lustful, Silhouettes can be very dangerous. Rika and Sandy, two Silhouette scientists, are drawn into the world of sex crime, to uncover the evil men who have perverted their creations and they will become the next victims of the lusty Silhouettes.