Van Wylde is not happy, because his parents dragged him to some cabin in the mountains for a family vacation. He wanted to go to a concert with his girlfriend, but that's not possible now. He then finds out that his stepsister Kay Lovely isn't happy about being stuck in this cabin either, because she wanted to go to a party with her friends.
Van says that he's especially disappointed because his girlfriend was finally going to give him a blowjob, and that can't happen as long as he's stuck here. Kay is surprised that Van's girlfriend hasn't blown him yet, and he explains that it's because his girlfriend thought his dick is too big. That gets Kay's curiosity, and she asks to see his dick. Van thinks that's a weird request, but Kay says that they're adults, so what's the big deal?
Finally agreeing, Van takes out his dick. Kay says that it really IS big, but she's sure she could handle it. She starts giving him a blowjob to prove it, and Van returns the favor by pulling Kay's pants down so he can touch her pussy. After that, he licks her pussy, and eagerly pounds his dick into her. Maybe this family vacation isn't so bad after all!