You are one of the maintenance staff hired by the boss of the toys supplier. Your burden is heavy because these toys are not ordinary toys. Your mission is very simple, that is, during these five days, you need to constantly check the toys regularly and do the corresponding repair work. With the passing of the time, you will find out that everything seems not as easy as you imagined in the first place. It seems like a dangerous place. And the whole atmosphere is super creepy. Horrible sounds will make you shiver from time to time. Sometimes, you even forget the content of your job out of fear. So you must be brave in these dark nights. But believe me, you will also have the most thrilling experience to share with your buddies. To show off your bravery and out of your curiosity, you must be patient and try to find out what is the thing behind all those toys? What force controls all these horrible things? And who makes all the frightening sound? If you have tried the 3rd generation of this game, then congratulations, for the timeline of this game is similar to that of the 3rd generation, which means it will be more easier for you predict the appearance of the next toy. But in Sister Location, what you need to deal with is different from day to day. For example, yesterday you were in the Breaker Room and finished your repairing work. Today you need to visit the Server & Parts.