You are hanging out with your giantess step sis and she starts to talk about how much fun it could be to crush you, jokingly of course....until she admits that she actually want to try it out. you are nervous but cant run away until its too late and she starts to bounce on top of you crushing you. she checks on you telling you how much fun it is for you to be her little toy now and jumps on you and grinds on you some more. After she tells you that she's going to give you a bit of a break to heal, but she will be crushing you over and over again now that she's given into her desires.