Your grandmother called you, so you quickly came over to her. She tells you that one of her dolls is... missing? She then explains that her son used to work with fazbear animatronics and has put two AI chips into these two dolls, which he then gave to her after the last location's closing, seven years ago...

As you enter one of the rooms, you see one of the dolls, sobbing and talking to himself, not understanding why his brother acted so mean towards him and being very worried for him (his brother/Moon) and his safety.