The other scenario I always liked was about an upper class family where the Dad was no longer around for whatever reason. This also means that the Dads income was gone. After some time the fancy schools, cars, clothes, neighborhood are all in jeopardy. The mom who is now dating a somewhat sketchy guy, through him, learns that he knows a guy who will pay nice money for homemade videos of things like real siblings having sex. The mom must convince the brother and sister. Normally, this would be a tough sell but none of them want to lose their friends or their nice things.