Because her mother is not having any more children, Mackenzie Moss has baby rabies. She's made up her mind that she wants Brad Sterling, her stepson, to give her the child she so much wants. She'll go to any lengths to obtain it. Mackenzie jumps on top of Brad one morning when he's not gotten out of bed in time to take her to school, and she spots his morning wood. That sparks an idea for her. She prods and strokes him to see how things work. At first, Brad isn't interested in it, but Mackenzie eventually persuades him to give it a try. Brad watches as she gives him a quick little fuck and then indulges in a few licks. She'll be deep-throating his hardon soon. Mackenzie seizes the chance to undress and get on Brad's fuck stick after her hands and mouth leave him hard as a rock. She glides down on her stepbrother's erection and begins riding him, her hairless pussy nice and tight. After experiencing a taste of his stepsibling, Brad is considerably more amenable to comply. He puts Mackenzie on her hands and knees and gives her a solid ass spanking, pounding her like a dog till she cums. Being a persistent girl, Mackenzie rolls onto her back and spreads her thighs to allow Brad to continue. She tells him to keep going, and he goes back to slamming his sexy sister. Mackenzie pulls Brad in close and buryes him inside her as he prepares to climax, hoping he would creampie her and maybe give birth to the child she's been longing for.