Emma's family is obsessed with new tech, especially their new AI bot, Buddy. Buddy listens to everything they say and watches everything they do. With a Buddybox in every room, connected to every smart device in the house, it's impossible to avoid him. But Emma tries her best. Then the day comes when Emma is home alone and Buddy starts taunting her. The more Emma pushes back, the nastier Buddy gets. The next thing she knows, she's in an all-out war, and it's not just her freedom and privacy that are on the line—it's her very life.