"Zoe ... and Laura used to do everything together, from taking silly selfies, to joining all the same clubs together and even throwing surprise birthday parties for one another. But lately things have been weird between them. Now Laura will post a photo of her hanging out with other girls before responding to Zoe's simple text... But then a magical app downloads on her phone--and things get even weirder. Suddenly Zoe can travel back in time to moments where her and Laura started drifting apart. It is like a dream come true. A chance for Zoe to mend their friendship"--Publisher marketing.