It is the third installment in the Five Nights at Freddy's series, and chronologically takes place thirty years after the events of the first game, in a horror-themed attraction based on the chain of restaurants featured in the first two games.
Use cams to check on Springtrap and other shadow animatronics, and reboot ventilation, cameras, and audio, and most of all, try to survive the nights. Btw if you hear breathing in the beginning of the night, just reset the ventilation.(If you hear pantin in the middle of the night, and there's no warning, just restart the ventilation - idk bug I can't fix)