Wanking Dad Is Blackmailed by His Daughter

Silence at last. The family is gone. The stepdaughter is out. The stepfather wants to use the rare time alone to treat himself to some fun. He finds a pair of his stepdaughter's worn red lace panties and sniffs them. Oh, does that smell heavenly.
Tissues and a few toys that no one is allowed to know about are ready. He puts on the black mask so as not to catch sight of himself in the bedroom mirror.
Now it should be just about him for once. Pulling the panties over his head, he begins to satisfy himself. A photo of the stepdaughter on the screen, he quickly becomes more excited.
But what happens now? From outside he hears an all too familiar voice. It literally shouts, "Hello?". He is startled and reacts in panic. But by then the door to his room is already opening. Standing in the middle of the room is his stepdaughter, whose panties he is currently wearing on his head.
She screams at him in disgust. But soon she realizes how she can take advantage of this situation. What if her mother would find out about it? An evidence picture is quickly shot and the stepfather is in a hopeless situation. The stepdaughter blackmails him unscrupulously. He has no choice but to cooperate.
In seconds, he is brought to deliver water, endure humiliation and even pay a large sum of money. Even against the handcuffing he finds no way to resist. The snotty and unscrupulous stepdaughter takes the game to the extreme in order to collect even more incriminating material.
The stepfather tied up, she wanks him to orgasm. Not, of course, without taking evidence shots that show him as the one at fault. An orgasm, plagued by guilt, finally makes the stepfather shiver.