Kate hasn't been very loyal to her husband. She's having an affair, but her husband has found out. He orchestrates his revenge by asking her to have sex with him. The slut can't even imagine what is about to happen, as she accepts that he uses some BDSM gear to cuff her hands to her neck and then blindfolds her. In the meantime, he has invited a friend of his to fuck his wife, without her knowing about it. The bloke comes out of the closet (literally) and gives her a taste of his cock. She doesn't suspect anything yet. He then starts fucking her and at some point they remove her blindfold. She pretends to not like it, but eventually just plays along and enjoys the whole experience.