A quiet drifter finds himself stranded in a remote town after his car breaks down. With no means to pay for the repairs, he accepts a peculiar offer from the town's shady mechanic: spend the night cleaning Willy's Wonderland, an abandoned family entertainment center, in exchange for having his car fixed. Oblivious to the sinister history of the place, the drifter agrees. The center, adorned with animatronic characters that once entertained children, now holds a dark secret, hinted at by the unnerving demeanor of the townsfolk towards the establishment.

As the night progresses, the drifter quickly discovers that the animatronic characters are not just broken relics of the past, but are inhabited by malevolent spirits that turn his cleaning duty into a fight for survival. Trapped inside the building with these animatronic adversaries, he must use his wits and strength to fend off the attacks. Meanwhile, a group of local teenagers, aware of the grim history of Willy's Wonderland, decide to venture into the place in an attempt to put an end to the cycle of horror, unaware of the night's already unfolding events. Together, these parallel strands of action set the stage for a night of eerie encounters and thrilling confrontations within the cursed walls of the amusement center.