Sam is making out with his new girlfriend Siouxsie Q when they are interrupted by her big sister, Penny. Penny is a little over protective and when Sam tries to stand up to her he quickly regrets it. He is no match for Penny and Sam is pinned, spanked and stripped in front of his girlfriend. After Penny finishes thrashing and humiliating Sam she bullies Siouxsie out of her clothes as well. Penny then gives them a brutally humiliating sex ed demonstration.