Brad Sterling is hanging out with his stepsister, Vanna Bardot, and their adopted sister, Jewelz Blu. The girls can't keep their hands off their titties and their twats. The girls share a room, so they have a codeword to say if they want to be alone to masturbate. Since they said it at the same time, they eventually decide to share the room. They don't want Brad to get suspicious, so they return to the living room together and offer to do Brad's chores so he can leave and go hang out with his friends. When Brad leaves to go get ready, the girls talk about how dumb he is for believing that they'll do all the work for him. In return, he pretends to leave and then waits to see what the girls are really up to.
As soon as the girls think Brad is gone, they abandon their chores and relocate to the bedroom. Laying side by side in the bed, each girl slides her hands into her shorts. Eventually, they agree that there's no reason to keep their clothes on so they ditch the shorts and pull their shirts up for easy access to all their fun bits. Brad waits for the opportune moment to walk in on them and confront them about the chores they're supposed to be doing. When Brad claims he's gonna tell mom and dad, the girls agree to let him stay and watch. Jewelz is pretty into it, even if Vanna isn't. She doesn't say anything when Brad whips out his man meat and starts stroking himself off alongside them. Reaching out, Jewelz starts stroking Brad with her hand while making increasingly blatant moves to suggest that she wants way more than what she's getting.
Eventually Jewelz gets on her hands and knees while Vanna protests that this is wrong. Brad doesn't say no to the opportunity to fuck his adopted sis. As Vanna watches, her feeling of scandal eventually fades to just being turned on. Jewelz brings Vanna in on the action by eating her sis out, then urges her to let Brad bang her, too, while Jewlez plants her pussy in her face. The girls get Brad on his back so each of them can take turns riding his cock and mouth. Then they hop off that cock to work together to blow Brad's dick. Licking and sucking together, the girls bring Brad to climax and then lap up his jizz so they can share a kiss to mutually enjoy his cum before they kick him out.