A masked kleptomaniac is prowling through the forest. She has an insatiable appetite for diamonds... and sex! This mysterious lady, also known as Countess X, knows that the visitors of a remote mansion have gathered to take part in a huge orgy. She feels an overwhelming urge to steal their belongings and decides to exhaust them with drinks and sex. After their debauchery they will be powerless: Countess X will take their diamonds and take off!