Your step sister is about to leave for a big night out, but she had promise mum and dad that she'd do the washing up before she heads out. She'll be in so much trouble if she doesn't do it, so she desperately asks you, her step brother to lend a helping hand... with a price. You're taking your pervy chance where you've always fantasised about getting kinky with your filthy sister. She's even pulling a toy out of her hand bag to play with...