A young man, eager to please his stepmom, agrees to participate in her "sex lesson." It quickly escalates as she undresses him, masturbating him to climax while instructing him on proper technique. As their act grows more intense, they hear a threesome taking place in the other room. Intrigued, they peak through the keyhole to watch their drunken stepmom perform oral sex on another man. Instead of stopping, they decide to join in on the fun, turning the sex lesson into a wild threesome demonstration.
