Katya Rodriguez and her stepbrother Brad Sterling continue on their family road trip. This time, they stop to pick up their adopted cousin Lily Rader so they can take her to college. Lily instantly starts flirting with Brad since she thinks Katya is sleeping. She flashes her tits at him and is quick to join him in the bunk that he's lounging in. Soon Brad is finger banging her hairy pussy. Whipping out his dick, he slides into her from behind.
Urging Brad down into the chair on the lower part of the RV, Lily hops back on her cousin's dick so she can ride his hardon while rubbing her clit. He brings her off, pounding her pussy until her whole body is bucking from the force of her climax. Then she drops to her knees to suck Brad off. At the last moment Lily's hand stroking his stiffie makes Brad cum while his dick is aimed all over Katya's face. She makes it known that she's awake, but her cousin is there to lick her clean.
Now that the two girls have started touching each other, they're both open to some threesome action with Brad. They work together to give him another blowjob, then take turns riding his dick. They then alternate between which girl gets to have her pussy pounded on her back while eating out the other. Brad fucks Lily so hard that she can't help but explode again! Moments later, he cums inside her to fill her with a hot creampie. The rest of the roadtrip is passed in companionable silence.