You and your friends vehicle breaks down outside Hayesville, Nevada, a quiet drifter is picked up by local mechanic Jed Love, who takes you and him to Willy's Wonderland, a once-successful abandoned family entertainment center inhabited with eight now-withered animatronic mascots: Willy Weasel, Arty Alligator, Cammy Chameleon, Ozzie Ostrich, Tito Turtle, Knighty Knight, Gus Gorilla, and Siren Sara. The restaurant's owner Tex Macadoo offers you and him to work as a night-shift janitor in exchange for repairing his vehicle before he and Jed leave you and him locked inside it. Meanwhile, teenager Liv Hawthorne attempts to arson the restaurant but she gets handcuffed by her parental guardian, Hayesville's sheriff Eloise Lund. When Lund leaves, Liv's friends Chris, Kathy, Aaron, Bob, and Dan release her. As you and the Janitor begin the duties, the animatronics are revealed to be sentient and homicidal. Ozzie attacks him but is beaten to death with a mop. Liv enters the restaurant through the vents to get the Janitor out while her friends douse the perimeter with gasoline. Simultaneously, the Janitor is attacked by Gus in the restrooms; he fatally stomps his face into a urinal. Arty chases Liv but she escapes into a fairy-themed room where Sara attacks her. Liv manages to fend off Sara and encounters the Janitor, who ignores her warnings about the animatronics and refuses to leave. Outside, Liv's friends climb to the roof, which collapses and causes them to fall inside. Liv explains to the Janitor that the restaurant was originally owned by notorious serial killer Jerry Robert Willis. He and his seven cannibalistic colleagues often slaughtered unsuspecting families, but the authorities eventually discovered them. They performed a satanic ritual to transfer their souls into the animatronics before committing suicide. When Liv finishes, several animatronics awaken and attack the group. But suddenly the lights cut out and everything is Pitch Black and no one could see anything. You were next to the janitor terrified but for some reason the animatronics never attacked you or came near you. In the ensuing chaos, As soon as the lights come on Knighty fatally impaled Aaron with his sword, Dan is eaten alive by Tito and Sara, and Arty mauls Kathy and Bob to death in a party room. Just before Knighty can kill Liv, the Janitor decapitates him and also breaks Arty's jaws, killing them both but Willy the Weasel hasn't done anything yet but he was staring at you.

"You're mine." He suddenly said while he was looking at you.