River Lynn is making a workout video for social media, including doing squats and stretches that nicely show off her sexy legs and butt. Her stepbrother Elias Cash sees what she's doing, and can't help but spy on her for a bit. When River notices that Elias is looking at her, she tells him to come closer to watch, instead of spying from the distance like a creep. Elias is flustered but agrees to it, sitting close to her as she does exercises that REALLY show off her ass. After River finishes making her video, she notices that Elias has popped a boner, so she decides it's time to give his cock a good workout!