Kayla McKay missed out on an opportunity of a lifetime. She was the girlfriend of Harry styles back in 2010 right before he got famous. On one fateful night in 2010 her and Harry break up. Having nowhere to turn, Kayla unknowingly hitchhiked with a time traveler all the way to the year 2022. In this year she finds that she's still dating Harry Styles, she's Instagram famous, and she went from being 16 to 28. How could that be? Her and Harry broke up in 2010? Not knowing what to do with this 28 year old life, Kayla does the only thing she could think of, texting her own number. She's surprised to find somebody responds, not just anyone, herself. Her sixteen year old self. Upon correspondence with her past self, she pieces together that the only reason why her and Harry are together now and the only reason why he's famous is because something she stopped her past self from doing. She only has 40 days to figure out what and convince her past self not to do it.