Jump forward eighteen years into the office of Dr. St. Croix, the much sought-after psychiatrist who specializes in sexual dysfunction. It's there that sensual vixen (Kaylani), writhes on his couch in the throes of orgasmic ecstasy. Her case is a classic one: a seething nymph one minute, a painfully shy wallflower the next. As a test, Dr. St. Croix gives her an invitation to a remote private club, rumored to host lavish, costumed sexual orgies beyond anything she's ever imagined. When she arrives at the party, the sex is already rampant with masked men and women devouring each other every way possible. From hard, hung studs ramming cocks down the throats sweet maidens, to ass-licking whores begging for release, Kaylani finds herself in a paradise of the perverted. When the doctor arrives at the party, he's shock to discover two masked women who seem strangely alike. They are identical in almost every way. One is his patient; the other is the sister that she's never met! Both are wild-eyed and dripping with a sexual intensity that he's never experienced before! This bizarre twist of fate seems to have unleashed a hellish reunion of a pair of unstoppable sexual predators… and the doctor is the main course!