Sam Bourne does his best to keep his stepsister Bonnie Dolce out of trouble. Dressed in their school uniforms, the Bonnie and her friend Liz Ocean try to hide that they're exchanging kisses from Sam, but they're not terribly subtle about it. Sam lets the make out session go on for a while before he comes over and asks if Bonnie's mom knows she's a lesbian or if he should tell.

The girls come up with a way to make everyone involved happy with the situation. They begin by agreeing to let Sam watch as they enjoy some girl on girl action. Sam's commentary gets increasingly explicit as he asks for more skin and specific views. When he asks to see the girls' asses, Bonnie lets him know that he can have them. Practically before Sam can register that, he has two hot nubile girls sucking down his dick while shedding clothing.

Bonnie is the first to help Sam get his dick wet as she mounts him in reverse cowgirl. Liz goes next, riding Sam in cowgirl as she feasts on Bonnie's juicy cooch. When Bonnie gets on her side, Sam bangs her from behind as Bonnie eats Liz out. Liz gets to enjoy the way Sam feels inside her one last time as she takes a pussy pounding on her back. Sam gives it to her right up until he's ready to blow his load. Bonnie is there to take his load and play cum swapping games, snowballing it back and forth with Liz.