Carrie’s plan

Carrie has made it out to the isolated warehouse before you, and appears deep in thought when you arrive. “This place is costing us a lot of money” she admits. “I didn’t think it was possible, but mom might be broken enough for use to bring Cassidy there.”

You frown “That might energize your mom though. I agree this is expensive, though. What if we disguised her?”

Carrie ponders a moment, then her face lights up. “Go ahead and have some fun with her, I’ll be right back!” With that she hopped into her car and drove off. Satisfied that she would resolve the situation, you head down into Cassidy’s cell. The TV is on, and the sounds of moaning and sobbing are blaring. Playing on loop is your cum dripping out of Liz’s pussy while you and Carrie mock her. Cassidy is on the couch, tears streaming down her face.

You sit next to her and point at the mass of fun on the TV. “Meet your new baby sister! Or should I say, mommy’s way of replacing you!” She sobbed louder. “Shh, it’s okay” you say as you pull her close. She stiffens from this show of affection. You unlock a nearby box and pull a gag with a long dildo attached out of it. You **** the dildo down Cassidy’s throat and buckle the gag. She is naked, so a little lube is all it takes before you’re sliding into her tight little pussy. Her gentle sobs and gags are erotic, a contrast to the roughness you treated her mother with. You lift your toy up and down like the flashlight she is as you ponder the future, cumming in her twice without putting her down. Little does she know, that cum is spending toward her eggs, knocking her up with your child. Sadly you didn’t choose to starve Cassidy, so you eventually have to switch positions from lifting her straight up and down. Maybe Carrie has some ideas for that.

Right on queue, Carrie comes down the stairs. She’s holding a bundle of rubber, and looks excited. “Hold still” she commands her sister as she moves close. She fastens what you can know see to be a mask and collar combo to her sister. It goes on easy, as Cassidy was currently bald, having tried to strangle you with her hair a month ago. Cassidy protests as the mask is zipped shut. There is a hole for her mouth, and Carrie inserts a plastic ring in it, forcing it between her teeth and nestling in the rubber mouth hole. She then pulls a small air pump from her last shopping bag, and, despite her sister’s protests, vacuum seals the mask around her face.

“There! Now she can’t be recognized, but you still have access to your unwilling copy of my mouth!” She says excitedly.

“Damn, that’s hot. How long can we keep her in there?” You ask.

“The mask says don’t use for more than a few hours or it can cause blindness from the pressure on the eyes. But I looked up some reviews online that said that’s the only damage it causes. So I figure, what does the dumb bitch need to see? We can leave it on forever if we want!”

Cassidy, hearing this through muffled ears, squirms in panic. A sadistic smile creeps onto your face. The idea of an even more permanent imprisonment then you are inflicting on her now is irresistible. “Sounds perfect. Looks like we can take you home Cassidy! Good thing you can’t speak with that on! Mommy-**** will never even know you’re back!”

Carrie heads home ahead of you to let Liz know a new **** is joining the house, one who will stay indefinitely in the basement. Meanwhile, in all three women, your sperm takes hold, beginning the seed of your harem family.