Bianca Bangs sits in the kitchen asking the magic ball about her sex life. When her stepbrother, Jodie Johnson, joins her, Bianca switches her questions to Jodie's sex life. Jodie claims to not have Bianca's stepfamily fetish, but Bianca asks the ball whether Jodie is going to drop a load in her pussy tonight and claims the response is it might happen. Then she flounces out.

Later, Bianca is masturbating loudly when Jodie comes into her room and makes the magic ball's prediction come true. They begin with a blowjob as Bianca marvels at how nice and big her stepbro's dick is. Getting Jodie on his back, Bianca continues to suck him down until she just has to get on top and pull her panties aside so she can ride that stiffie.

Jodie uses the initial cowgirl ride to enjoy his stepsister's marvelous titties and hard nips. When Bianca gets on her knees, Jodie is there to shove back inside and make her moan. Then Bianca rolls onto her back and spreads her thighs so Jodie can dick her down properly. Her orgasm milks Jodie's out, too, and he gives her the creampie the magic ball predicted all along.