Lilly Bell is staying with her friend, Jessie Saint, but there's some serious friction between the girls. Jessie wants to take a bath, but no sooner has she undone her robe than Lilly shows up and picks a fight that she wants to take a bath. Since Lilly is a guest, she claims Jessie's mom says she can go first. A bit of a catfight leaves the girls naked together in the tub, each of them claiming they won't move. When they begin insulting each other's bodies, Lilly claims Jessie's big ass is taking up too much room and Jessie shoots back that Lilly's big boobs are taking up too much room. Lilly says Jessie's stepbrother, Joshua Lewis, likes her big boobs and that she'll fuck Joshua just to piss Jessie off. Jessie tries to play it off cool, but Lilly isn't done. She tells Jessie that she found her journal and now knows all about her family breeding fetish. When Lilly denies it, Lilly leaves the tub saying she's going to go fuck Joshua. Jessie makes it all of a few seconds before she gets up to follow Lilly.
Lilly arrives at Joshua's door first, proudly naked. Confused, Joshua tries to ask what Lilly is doing. Lilly doesn't spend much time talking before she crawls into bed to pulls Joshua's sweatpants down and take his cock in her mouth. She's happily blowing Joshua when Jessie walks in, wearing her robe once again. One look at Lilly with her stepbrother's cock in her mouth is enough to send Jessie back into a rage. Shoving Lilly aside, Jessie takes over the BJ. Lilly isn't about to let Jessie have all the fun. The girls reluctantly begin working together to blow Joshua, deep throating his dick and sucking his balls until he's nice and hard, which makes it inevitable that they'd both want to bang him, too.
Straddling Joshua's hips, Lilly takes the first turn riding him in reverse cowgirl as Jessie watches and pouts. Watching Lilly ride is hot, so it's not long before Jessie is masturbating beside Lilly. Eventually Jessie insists on taking a spin of her own, climbing onto Joshua's fuck stick to give it to him in cowgirl as Lilly spanks her ass. Lilly eventually masturbates beside Jessie, with a little bit of help from her friend. Lilly gets on her knees next so Joshua can give it to her in doggy as Lilly buries her moans between Jessie's thighs. Lilly brings Jessie off with a finger bang as Joshua keeps her pussy party going. The girls swap spots, with Jessie on her back spreading her legs wide open for Joshua to give it to her. Lilly cradles Jessie's shoulders and kneads her tits. When Jessie begins begging Joshua to cum for her, Lilly teams up with her to urge Joshua to deliver a creampie right in his stepsister's pussy. Filled with her stepbro's jizz, Jessie and Lilly gossip about how Jessie finally fulfilled her breeding fantasy.