Mackenzie Mace and her stepbrother Johnny have a super chill relationship since she's totally into girls. She decides to do a fashion show to get his opinion about whether various outfits convey that she likes pussy. She takes notes of Johnny's feedback as she comes into his room again and again, wearing a different outfit each time. Johnny's comments get increasingly sexual as Mackenzie tries to explain that she's trying to figure out how her different outfits affect her relationships. To demonstrate how his stepsister's fashion show is affecting him. Johnny whips his hardon out.

Although she's never wanted dick before, Mackenzie has to admit that now that she has the opportunity to be up close and personal with one she's curious. Johnny is game to let Mackenzie explore. She asks permission to touch him and explore his balls. As she continues with her experimentation, she offers to let Johnny touch her boobs. By the time she offers to have a real live man touch lick and finger her pussy, Mackenzie's notes have devolved into how much she loves her stepbrother's dick. Since Johnny is already face first in her greedy snatch, Mackenzie offers for him to stick it in. Why would he say no to such a lovely invitation.

Johnny has Mackenzie get up on her hands and knees for their first time together. At first she just wants to see how it feels, but soon enough she's really into it! She rocks back to meet Johnny's strokes as he shows her that dick can be just as good as anything a girl can give her. She tries a few other positions, climbing onto Johnny's fuck stick to ride him in both reverse cowgirl and cowgirl. Johnny finishes Mackenzie off by giving it to her as they spoon together and then taking her as she lays on her back and guides him with her moans. Pulling out at the very last second, Johnny moves up to Mackenzie's mouth so he can deliver a facial that lets her enjoy his cum shot. It turns out Mackenzie likes certain guys just as well as girls.