It's your first time going to a swingers club, and it's just your tough luck that you've bumped into your step-sister... but it's all very exciting being at a sex club and to find your step sister there and something comes over you. Kate is worried you'll tell her dad, so you decide you'll take this opportunity to have a bit of fun with your sister. You won't tell dad if she agrees to strip and let you rub your cock over her... Your sister seems to be enjoying herself a bit too much as she shows you her soft pussy.