This is One Night at Jeffy's, there are no cameras and Jeffy will appear twice in the night. You have power, and you need to use it only when needed, having the door closed or light on will drain 1% of power every second they're going, when you see Jeffy at the door, press the green button to the right, (door will open after 25 seconds, use ONLY when needed!!) (Wait for the door to open on it's own when shutting it on Jeffy) he'll soon leave. There is also a music box which you need to wind, click the 'TO Music Box' button to go there, if you ignore it black-eyed Jeffy will get you! Have fun surviving the night at Jeffy's!
I love the Five Night's at Freddy's games.