In the scorching summer of 2013, Abigail Kamara, left largely to her own devices, enters a sphere of supernatural sleuthing. As her cousin, the wizard-in-training constable Peter Grant, is occupied elsewhere, Abigail finds herself entangled in a peculiar case of missing teenagers in Hampstead Heath. Strangely, the youngsters resurface unscathed, unable to recount their whereabouts. With the company of a new ally, Simon, and a group of cunning, chatty foxes, Abigail explores the verdant wilderness of Hampstead. Her quest? To unravel the enigma of who, or what, beckons the teens away—and what intentions lie behind these mysterious summons.