Turning twelve and a half shouldn't be the most exciting birthday of your life. It's a half birthday, after all. But Harper is thrilled because she is getting the biggest gift of all: her parents' approval to finally get social media accounts. When she goes to post her first photo, there is a filter she has never heard of before. One that shows you what you will look like when you are older. Curious, Harper clicks on it . . . and ends up fast-forwarding in time to her twenty-second birthday. Being in her twenties means having the freedom she always wanted, earning money for the glow-up she didn't know she needed, and working for her idol! But Harper soon discovers a lot more has changed than she expected-including the person she wants to be. Will Harper be able to use the filter to get the life of her dreams? Or will there be more glitches?