Five Nights at Freddy's: Sister Location

Mike is hired by Circus Baby's Entertainment and Rental, an underground facility storing animatronics from the closed Circus Baby's Pizza World. The facility's AI, HandUnit, greets Mike each night and assigns him maintenance tasks. On the first night, everything runs smoothly: using elevated control pads, Mike checks on and, if necessary, administers electric shocks to the three animatronics—Ballora, Funtime Foxy, and Circus Baby—to ensure they remain active, before leaving. On the second night, the power goes out, the animatronics come to life, and Circus Baby warns Mike of the danger posed by the other animatronics. She instructs him across Ballora Gallery and assists him in resetting the circuit breakers in the breaker room, where Funtime Freddy resides. On the third night, after performing maintenance work on Funtime Freddy, Mike is attacked by Funtime Foxy. Circus Baby places him in a "springlock suit", an animatronic that can also be worn as a suit by retracting its mechanics into its lining, for his protection. On the fourth night, Mike must escape the suit while repelling tiny ballerina animatronics called Minireenas.
On the fifth night, Mike discovers two hanged technicians in the location where the animatronics should be, preventing HandUnit from detecting their absence. Circus Baby directs Mike to dismantle her empty shell in the Scooping Room, where the animatronics' endoskeletons are extracted by a machine called the Scooper, explaining that this is necessary to "save what is good so the rest can be destroyed". She warns him that he is being pursued by the animatronic Ballora, who intends to kill him. Between nights, Mike watches an animated sitcom at home.



Endings

The game has two endings. If Mike follows Circus Baby's instructions, he finds all animatronics have been gutted by the Scooper. Circus Baby's voice is revealed to be Ennard, an amalgam of the animatronics, who uses the Scooper to eviscerate Mike and disguise itself in his skin. The other ending is unlocked if the player defies Circus Baby's instructions by entering a private room, where they must fend off Ennard, angered by the player's defiance, until 6:00 a.m. Afterwards, Mike returns home to find that Ennard has followed him.
If the player completes the post-death minigame in a certain manner, Circus Baby extends a claw from her stomach and pulls in and kills a girl, presumed to be Elizabeth Afton, whose soul possesses the animatronic. Two sets of cutscenes may play if the player completes different modes of the Custom Night. If the player survives the hardest difficulty, Ennard abandons Mike's discolored and decomposed body and leaves him near death. Meanwhile, if the player completes "Golden Freddy" mode, the cutscenes show the ruins of a burnt-down Fazbear's Fright, where Mike speaks to his father, William Afton, the murderer mentioned in previous games. Disfigured and "living in shadows", Mike recounts that William manipulated him into freeing "her", prompting the animatronics to attack him, mistaking him for his father. With no other options, Mike resolves to find his father.