Cassie Blake heads a refreshingly new cast as the All American Girl who wants sex, sex, sex and proves that she is a Certified Nympho! Felicity is an alluring but painfully inhibited New Yorker who keeps her sex life as clean as her apartment until Oona, a certified nympho moves in! Felicity first has her doubts when Oona jumps all over a well-hung workman painting the apartment. She has further doubts when Oona has a 'bedwarming' party with her horniest friends and damn near tear the place down with wall-to-wall sex! But Felicity finally gives in and joins in the fun as she realises that Oona is the perfect roommate... unwillingly to do the chores but perfect willingly and able to supply countless hours of 'sisterly love'!