Charlie Dean's dad recently remarried, and now this American has learned that he has not one, but two stepsisters. Kate Rich and her adopted sister Lady D are eager to meet their American stepbrother when he comes to visit. Both girls are immature, so when their parents go away for the weekend they leave Charlie in charge of them. Rather than obey Charlie's orders, Kate and Lady D decide to just do whatever they want in an effort to get him to fuck them.