For over a decade Finn has been known only as the hero of Ooo, but Hunson's amulet awakens something within Finn, and old memories and powers now flood back over him. This is not Finn's only concern however, as deep within the bowels of the Nightosphere something ancient and terrible begins to stir, and if it is not stopped, all of Ooo will feel its wrath.

Freddy Fazbear's Pizzeria has a new night guard with some rather unique, and terrifying abilities. He however is not the scariest thing in the pizzeria, and he, along with the animatronics, must uncover the dark secret within the restaurant and take vengeance for those who have been harmed by it.