Nina Elle is in a sexual relationship with her stepdaughter, Angel Youngs. They decide it would be fun to bring a third person into the bedroom, resolving to get Angel a new stepsister. Angel suggests that a classmate – Aria Banks – is the perfect candidate, because her parents are divorced. Nina resolves to make it happen.
Days later, Nina returns home after a date with the ex-husband from Aria’s family, enthusiastic about the prospects and revealing that this is all part of their plan. She goes on several more dates with him, keeping Angel updated on the situation… it’s looking good, but he hasn’t proposed yet. Eventually, Nina reveals that she has been successful: she’s going to marry him next month, and their plan to make Aria a new stepsister will finally come to fruition.
A month later, Nina welcomes her new husband – and most importantly, Aria – to their home. As Angel gives Aria a tour of the place, Nina purposefully locks her new husband out of the house. Nina and Angel then tell Aria that he just took off, abandoning them. Aria is stunned, asking what’s going to happen to her now. Angel and Nina comfort her, saying they’re her family now, so they’ll take care of each other… including taking care of each other’s breasts and pussies, of course!