Ray with casted hands finds his sister a willing participant in allowing him to release his pent-up spunk. He reciprocates by eating not only her cunt but her ass as well. As they are going at it, mom catches them. Instead of a scolding, she finally joins them in the taboo act of family incest.
Marla and Susan have been best friends since college. They both had children less than a month apart, Ken and Janie. The children are best friends too, but Ken, now 16 lusts after Marla. Finally he figures out a way to seduce her, but ends up with her and Janie too.