Austin has wanted to have a threesome with his girlfriend, Rhea, forever. When the threesome seems to finally be happening, Austin is mortified when he discovers Rhea set it up with his stepsister, Ellie. He can't fuck around with his stepsister, what the fuck is Rhea thinking? It is revealed that this is part of a sorority tradition, and Ellie wants to be a part of this particular club more than any other. She needs Austin to play along, sit back, and play the game. Austin jerks off while watching his stepsister get eaten out by his girlfriend. It's a wild sight, and he never in his life thought this was something he'd see, let alone jerk off to. Seeing Ellie get her pussy eaten is like gold. Rhea can see how much Austin likes it, so she stops eating out Ellie and scootches over to Austin to finish him off with her mouth. He cums hard, and Rhea kisses Ellie on the mouth so she can get a taste of her brother's load. The fun only amplifies when Ellie sneaks into Austin's room at night in a mask. She needs to suck his cock now if she wants to get into the sorority and uphold a longstanding family tradition. Austin knows he shouldnt let his stepsister blow him, but it's hard to resist with her lips wrapped around his dick. Ellie has him cumming in no time, but the real test comes when Austin gets to fuck Ellie and Rhea at the same time. He's got a beautiful redhead ginger stepsis and a dark-haired, slutty girlfriend right in front of him, both ready to get their brains fucked out. He has to work hard not to cum right away, as he wants a chance to fill up both of their pussies. Ellie forgets she's even doing this to join a sorority because she gets so swept up in the moment. If having her stepbrother's cock inside of her is wrong, she doesn't want to be right. Austin blows a big fat nut for his sweet stepsis, coating her mouth in his sticky cum.