Zac Wild walks into the massage parlor, sweating and a little out of breath. His step-mother Chanel Preston thanks him again for helping her move that old couch into the trash outside. He tells her that it's no problem, remarking that it did make him work up a sweat though. He lifts up the bottom of his t-shirt to wipe away the sweat from his brow, revealing his bare midsection, complete with six-pack abs. When Chanel gets a look at his body, she lets out an involuntary gasp of approval. What? Zac asks. Oh... nothing, it's just, she begins, looking him up and down. Well, she's just realizing now how different he looks since he turned 18 last year, she says biting her lip a little. 'It's just that I hadn't realized how muscular you'd gotten since you started working out, you've grown so... big and strong, ' Chanel says. Well, it's easy not to notice changes when you live with someone, but he's still the same guy underneath, Zac says. Oh... yes... definitely still her precious son, Chanel says, doing her best not to check him out, but ultimately failing. Well, he'd better get home and shower, Zac says, clearing his throat as he moves to leave. An idea seems to come to her. Well, there's a perfectly good shower here, so if he wants... he can just rinse off... here, Chanel suggests with a small edge of flirtation. Hmmmm, he guesses that would be ok, better than sitting all sweaty in his car on the way home, he agrees with a little laugh. Exactly! Chanel says. He agrees, leaving for the shower room. When he goes, Chanel strokes her chin, as if considering an idea.A few moments later, Zac is in the shower. Chanel slowly peeks around the corner of the shower area, spying on Zac as he washes himself. Gazing at his body, she is clearly becoming aroused and bites her lip lustfully as she rubs her pussy over her clothes a little. She tries to look away, but she can't seem to tear herself away from the sight. Soon, she can't take anymore and her temptation overrides any good sense she may have had. She sees a towel hanging next to the shower stall. Without Zac noticing, she stealthily removes the towel from the hanger. She takes a deep breath. She then pretends to be coming into the shower area only at that moment. "I just wanted to bring you a towel, " she says loudly, rounding the corner to stand in front of the shower stall. Oh, she's so sorry! She thought he would be finished by now! Chanel says, feigning surprise. Zac laughs good-naturedly. Oh, it's ok, it's not like it isn't anything she hasn't seen before, she's seen him naked plenty of times, he says brightly and without embarrassment. So it looks like things haven't changed that much huh? Zac chuckles. Well, she's not so sure about that... Chanel says, staring at his body. Even though she's not his birth mom, she did still raise him and can remember when he was just a skinny kid, but now... Chanel adds. When she sees that he is having trouble washing his back, she offers to do it for him. He's hesitant, but ultimately agrees.As she washes him, it doesn't take long for them both to become caught up in the moment as the shower becomes increasingly erotic. When Chanel slips her hands sensually around Zac's cock, things get a little too intense for him and he pulls away from her. Eager to further her seduction, Chanel offers to massage him to soothe his aching muscles. He agrees.In the massage room, she has him lie on his stomach as she pours nuru gel on his back. She body-slides on his back. He begins to get really into it, closing his eyes and groaning softly. Soon, she asks him to flip over onto his back and she begins to body-slide on his front side. It doesn't take long for them both to become entranced by the friction of their nude bodies rubbing together. Eventually, Zac's dick begins to get hard. Chanel sees it, biting her lip. She tells him that it looks like he has a particularly... tense muscle. She'll be happy to release that tension for him. She slips her hands around his dick as he gasps.Chanel can't believe how grown-up Zac is, and he's about to show her how much more he can grow.