Carter Cruise snuck out of the house again and her parents are furious. When she climbs into her stepsister's room, Lily Rader tells her that mom and dad are out looking for her and are worried sick. Carter tells her that she'll just have to lie for her but Lily is fed up of covering for her. When she asks Carter what she was doing out this late anyway, she hesitates before answering. Lily presses her and Carter tells her she was out with her girlfriend. Lily had no idea that Carter was a lesbian. Lily tells her that she's always been curious about girls but has never had the nerve to fool around with one. Carter has an idea, perhaps she can educate her in all things lesbian and in return Lily will lie, saying that she was in her room the whole night so she doesn't get in trouble. Lily isn't sure; after all they are sisters. When Carter reminds her that they're actually stepsisters, it doesn't take long before Lily agrees. Carter smiles and approaches Lily as she shoves her tongue in her mouth. Lily reciprocates as she kisses her stepsister back. It isn't long before the sisters are taking off each other's clothes. As Carter seduces Lily, she stops from time to time to make sure Lily is enjoying herself. She shows her all the ropes: how to eat pussy, how to trib on a wet pussy, how to tongue an ass. By the time she's done with her, Lily has gone from rookie to full-fledged lesbian expert!