You walk in just as sierra is about to do a custom 2d video for someone.  She allows you to watch, but only if you are naked, stroking your cock, and don't cum until she tells you.  You watch her use a glass dildo for the custom video, then after 5 minutes she turns her attention to you.  She tells you to stroke your cock as she plays with herself in front of you.  She gets right up close and teases the tip with her tongue until she leans back and lets you put your load all over her tits.

As you are sitting there on your headset, Sierra comes home with a friend. She's got a fun idea to put on your favorite video, while her and the friend re-enact the video in real time. The only catch, you don't get to see who the friend is playing the role of Blake Blossom! In your headset, you see a double blowjob, and two perfect blonde asses ride you in reverse cowgirl. They take turns riding you so you can see tits bouncing in your face and even a side profile of Blake as she grinds on your dick. They finish you off with a double BJ, handjob, and squeezing your dick on Blakes tits. Now that you've popped, you can't take off the headset until the friend leaves... Who was that mystery friend?