In 1982, at the first Freddy Fazbear's Pizza restaurant, Charlotte Emily witnesses its co-founder William Afton lure a boy into the back rooms to kill him. Her pleas for help are ignored by nearby parents, so she rescues the boy herself despite the protestations of her best friend Vanessa, William's daughter. Charlotte is fatally stabbed by William, falls through an onstage trapdoor, and is held by the Marionette
animatronic. The incident is suppressed, and the restaurant is subsequently shut down. Another restaurant in the Freddy Fazbear's franchise opens some time later, where William murders five more children. In 2002, two years after William was killed by the spirits of his victims at the franchise location, the legends of the murders spawn a horror festival called "Fazfest". Abby misses her ghostly friends and repeatedly asks her older brother Mike to repair the animatronics they inhabited. Believing the spirits are dangerous and have moved on, Mike repeatedly makes excuses until Abby returns to the franchise location herself. Mike finds her there, apologizes for lying, and discovers a talking toy called the FazTalker. Meanwhile, the adult Vanessa struggles with the trauma of her father's crimes and abuse. Ghost hunters Lisa, Alex, and Rob tour the original restaurant with its security guard Michael. Lisa finds and deactivates a music box, awakening the Marionette, which is possessed by Charlotte's vengeful spirit. The Marionette possesses Lisa, takes control of the restaurant's "Toy" animatronics, and kills Alex and Rob. Abby receives a message on the FazTalker from Toy Chica, whom she believes to be the Chica possessed by her friend from the franchise restaurant. She visits the original location, where Toy Chica helps her build a robot for a school science fair. Vanessa grows concerned for Abby's safety after learning this, but Mike dismisses her, having learned of Charlotte's murder and of Vanessa's connection to it. Vanessa travels to the original restaurant, discovers the Marionette has awakened, and is captured by the possessed Lisa. However, the animatronics cannot leave unless their safeguards are disabled. Meanwhile, Abby's science project is destroyed by her unsupportive teacher, Mr. Berg. She returns to the original restaurant and disables the safeguards at Toy Chica's request to be her new project. While meeting with Charlotte's father Henry, Mike learns that Abby has gone missing from school. Mike heads to the original restaurant after Henry gives him a new music box to leave there for Charlotte. At Abby's school, Toy Chica kills Mr. Berg. The other Toy animatronics begin hunting parents, whom Charlotte seeks revenge against for ignoring her pleas for help. Mike frees Vanessa, who pursues the Toy animatronics, while Mike remains at the original restaurant to remotely track them while fending off Withered prototype animatronics. The Marionette, having abandoned Lisa's corpse to hide inside Toy Chica, possesses Abby. Realizing they are outnumbered, Mike returns to the franchise restaurant and pleads for the possessed animatronics to help Abby. Mike and Vanessa return to Mike's home, where he uses the music box to lull the Marionette back to sleep and free Abby. They are surrounded by the Toy animatronics and Michael, Vanessa's brother who wants to continue William's murders. He orders the Toy animatronics to kill them, but the possessed animatronics arrive and destroy the Toy animatronics, before their safeguards cause them to shut down; Michael escapes. The spirits possessing the animatronics enter the afterlife, warning that they will no longer be able to hold "him" back. Mike leaves with Abby, telling Vanessa to stay away as he no longer trusts her. Alone, Vanessa is possessed by the Marionette. At the franchise location, the animatronic suit containing William's body is found and activates. ==Cast==