Stepmom and stepdaughter get home from a lunch out and stepmom starts to feel a bit funny. Stepdaughter dared her to eat some weird food and now something feels off. All of a sudden, something starts growing in her panties and she pulls out a massive futa cock! Stepdaughter is disgusted and urges her to call 911 but stepmom is mortified and doesnt want anyone to know. She frantically googles solutions and finds a forum discussing how spontaneous futa cock growth can be reversed by finding release. Stepmom convinces her stepdaughter to give her a chance to masturbate the problem away, but worried that something might happen to her if left alone, she begs her to stay and watch. Uncomfortable with the idea but keen to help her stepmom however she can, the stepdaughter agrees. Stepmom starts jerking her huge dick but it's not working. She begs her stepdaughter to help out, first using her hand, then convincing her to suck on her stepmother's dick. Finally, it works and stepmom releases a huge load all over her stepdaughter's face. The cock instantly shrinks but it's still there, so they realise they have to drain another load of cum out of stepmom. This time stepmom's urges get the better of her and she throat fucks her stepdaughter, shooting another load down her throat and the dick gets smaller still. She's so embarrased and guilty for ruining her stepdaughter's innocence, but stepdaughter realises that despite herself, this whole thing is getting her turned on. The two embrace and the stepdaughter convinces her reluctant stepmother to let her fuck her cock. Who better to lose her virginity to than someone she feels so comfortable with? She begins to ride her stepmother who begs her not to let her come inside her, but her stepdaughter is now so turned on by the idea of getting impregnated by her stepmother, she can't stop...