Amari pensait avoir laissé derrière elle le tumulte du Bureau des enquêtes surnaturelles pour retrouver une vie normale. Mais lorsqu'une mystérieuse malédiction frappe humains et créatures magiques - transformant chacun peu à peu en machine - son fragile équilibre vole en éclats. Touchée de près par cette menace mécanique, la jeune héroïne n'a d'autre choix que de reprendre l'enquête pour découvrir l'origine de ce phénomène paranormal... quitte à s'allier à un ennemi d'hier pour sauver ceux qu'elle aime.

In the wake of the extreme losses to the Bureau during the war with Dylan Van Helsing and the magicians, Amari has stepped back from being a Junior Agent to spend the school year as a normal kid. But as she prepares to graduate eighth grade, she's faced with a decision: Return to the Bureau and join the elite new Junior Special Agent Program, or retire for goodwhich would mean safety, but also losing her memories of the supernatural world. But soon she finds that she may not have a choice. A deadly new curse is threatening both the supernatural and mortal worlds as, beneath their skin, people are slowly becoming machinesand losing their very humanity. And it's somehow related to the First Magician. Hundreds of cases have been cropping up, with no cure in sight. And when the curse hits someone close to Amari, it's up to her to get to the bottom of this deadly mysteryeven if it means trusting an old enemy.