Jack Vegas, the lustful stepson, fantasizes about his curvy, blonde stepmom Jenna Starr while she works out in their home gym. When he can't take it anymore, he sneaks up behind her, pressing his hard cock against her ass. Jenna, surprised but turned on, grinds back. Jack takes this as an invitation, unzipping his pants and sliding into her from behind. He fucks her hard, his free-use fantasies coming true as he pounds her tight pussy, making her gasp and cum all over his cock.