Former security guard Mike (Josh Hutcherson) and police officer Vanessa (Elizabeth Lail) hide the truth from Mike's 11-year-old sister, Abby (Piper Rubio), about the fate of her animatronic friends. But when Abby sneaks out of the house to reunite with Freddy, Bonny, Chica, and Foxy, it sets off a terrifying chain of events that will reveal dark secrets and unleash a long-forgotten nightmare.