Teen Cassidy Klein is in the middle of fucking her girlfriend Melissa Moore when her stepsister Lana Rhoades comes home and sees what they're doing through the window. While Melissa's in the bathroom, Lana tells Cassidy that she took pictures of their lewdness in action, and she plans to show their parents, unless she leaves and lets Lana fuck Melissa. Of course, Cassidy says no but Lana doesn't relent. The sisters quickly come up with a plan.Cassidy makes Melissa cover her eyes while she rubs her clit. Then Cassidy quietly leaves the bedroom and Lana comes out from under the bed. She takes Cassidy's place playing with her pussy. Cassidy rubs her own pussy while she listens from the next room. Feeling excluded, Cassidy joins the lesbians on the bed. Melissa keeps her eyes closed and is none the wiser. Lana and Cassidy take turns licking Melissa's pussy.When Cassidy gets territorial, Lana calls out in objection, and Melissa uncovers her eyes. Seeing two naked girls in bed with her, she demands to know what is going on. Cassidy explains the situation and Melissa agrees to Lana's terms. She's always wanted to fuck Cassidy's hot sister. Once Cassidy swallows that bitter pill, they resume their threesome, only this time Cassidy and Lana play with each other too.Melissa lies down and spreads her legs for Lana while Cassidy eats her stepsister's ass. Lana tribs Cassidy while Melissa sits on Cassidy's face, then Cassidy watches Lana fuck her girlfriend's tongue. Melissa and Lana eat Cassidy's ass and pussy. The stepsisters devour Melissa's sweet lips and clit. Cassidy cums in Lana's mouth while Melissa sucks the pucker of Lana's ass till she cums. Cassidy grinds against her girlfriend's tongue while Lana tribs the cum from Melissa!