You've always thought that magic was nothing more than hocus pocus and not real. So the local witch decides to make an example of you by shrinking you down with her special powder she wears around her neck. Shrinking in stages, first breast level, then ass level and finally foot level. She has you scurry about the floor, dodging her now giant heels before having you climb her now massive body, worshipping every curve.
Finally she decides to bottle you up to ensure you do not escape from her, introducing you to your new home. She shrinks the bottle smaller so it could fit in her cleavage where she thinks you'd be nice and safe.