Your giantess step-sister asked if you wanted to come along shopping after her mom told her she had to ask. You happily agreed because you needed some things anyways, but this just annoyed her. She tossed you in the back of her panties (like usual to keep from losing you) and told you she'd let you out when you got there... however she just wanted to go meet up with friends for the day and wasn't planning on letting you out any time soon!
Video With Sound: https://mega.nz/file/6mhThKpD#DpQXKQ0aSL0yImWMWqYie_QX9jB3i6HVEW1jnYzfjUA