When the Stratosphere app first launched, it was only a gimmick to high school freshman Zoey Stevenson. An addictively fun and trendy new twist on social media where instead of followers or likes, users receive a rating. A numerical value assigned to every user determined by how much attention their profile generates. But her view of the app changed from harmless to horrifying once her best friend Ray became obsessed with her rating after months on the app, falling into depression and taking her own life. Now two years after its release, Zoey has seen the Sphere-as it has become known-grow into a global cultural phenomenon. With four billion downloads, ratings within the app have become the ultimate status symbol, marking a person's importance and popularity not only online, but in life. Zoey knows what happened to Ray is happening to millions of others all across the world, and she's determined to see society wake up to the dangers of the app before more lives are destroyed. She has a plan. Hijack a high-rated profile and use it to spread anti-Sphere information to billions of unaware users. When she's recruited to work for teen popstar prodigy and high-rated user Ainsley Avalon, she thinks she's found her opportunity. Her pathway to destroying the Sphere. But she didn't expect to enjoy her new job this much. Her presence on the app. The thrill of the spotlight, or the way she's gone from being Ainsley's favorite new crush, to the girl she's falling hard for. Now Zoey wants everything that she's missed out on in life so far. Happiness. Love. Purpose. In the app it all seems possible. And she's finding it harder to stand against the Sphere, now that she's at the center of it.