Then, suddenly, there was bright flash of light that filled Jon's vision and when it was gone, he knew that there was definitely something wrong.
When he looked down at himself, he didn't notice anything obviously different, but when he looked at his sister, that's when he noticed what was wrong. She was taller than him. More ... mature. But it wasn't just that. He was shorter. At least by an inch or two. At first, he thought that the bracelet had somehow swapped their heights. But after looking himself and Zoe over more intently, he realized that they had swapped ages instead. So now, Jon was 15 and Zoe was 17.
"This is impossible. How could this happen?" Jon asked, panicking.