You're a 16 year old boy named John. You're parents are out visiting relatives, and you're left to babysit your 7 year old sister, Katie, who's begging to go shopping, since it's better than staying home and having to play with her there, though you won't buy much for her, and theres a chance something will catch your eye aswell.
''John, John look!'' you turn you head and see your sister pointing at a magic shop, knowing that magic doesn't exist, you decide you might as well enter, find her something cheap to satisfy her for now. Your sister want's several items that are promised to be magical by the owner, though you're not gonna buy something that you know will dissapoint her, hell, if you do that your parents are probably gonna get mad.
''Oh, oh! What about this John?'' You spot her with a vial full off this strange green liquid, which smells suprisingly good, you know it won't do anything magical, but since it will probably taste good, it won't dissapoint her that badly. You take it to the shop owner and ask how much it is, only one dollar, a cheap drink to he honest.
However, he warns you ''Whoever drinks the potion will gain soul swapping powers for the next 24 hours, what I mean by this is, their soul will be able to swap bodies with other souls for the next 24 hours'' Katie's eyes widen ''However, this will only happen when two souls touch each other, otherwise nothing will happen''. Your sister looks a bit confused, and the owner decides to simplify it ''The soul is at the head, so the soul with the powers need simply bump their head with another person, and it will swap their bodies'' Katie looks extremely excited, and you decide to buy it for her, since it will atleast taste nice, even though everything the owner just said was a lie.
Upon leaving your sister drinks the entire potion in two gulps and...