Lonny Cush lives in an unnamed fictional world city, dominated by a huge tech company akin to Google. A manual worker - although he has been put forward for retraining, a euphemism for redundancy - Lonny is out of sync with the changes in his hometown and his century, and doesn't have the means to give his quiet teenage son Egan and his precocious, ultra-demanding nine-year-old daughter Shelby (one of the most memorably awful children in literature!) what they need, or say they need. But with his mother-in-law circling for custody and needing to win back his kids' favour after he maybe went too far in discipling Shelby, he succumbs, splashing out on the thing Shelby wants more than anything else: her first smartphone. And so begins the silken silence as she drifts off to her room and down the rabbit hole of memes, trolls, hysteria and peer-pressure, and the true, vertiginous terrors of 21st-century life start flooding into the Cush household. And what should Lonny do? Rescue her or follow her? Because who is right: Lonny, or the world he and everybody else is living in now?