The only threesome scene is a hardcore one where a man is having sex with his wife and step-son, swapping between the two while anally penetrating them and ejaculating

A husband decides to take his life in his hands and tries to seduce his step-son to get involved in a hot ménage à trois. Both partners bend over, and they take turns anally pleasing each other, which ends in powerful orgasms and sexual fulfillment.