It's Been so Long Five Nights at Freddy's 2 Animation

It's Been So Long Five Nights At Freddy's 2 Animation is a screamer animation made by Spanish YouTube user Aely Artist on December 21, 2014.

The animation depicts a story of a mother who loses her child after leaving a restaurant. The child later commits suicide after discovering that a killer had disguised himself as a friendly animatronic, Golden Freddy, to prey on the innocent children attending the party. The mother, who is revealed to be Marionette, is devastated by the loss of her friend and his child. In a desperate attempt to bring them back to life, she dresses them up in the costumes of the animatronics from the party. As the story unfolds, a warning icon appears, signaling the danger that lurks within the seemingly harmless animatronics. The icon remains in the second frame, serving as a constant reminder of the looming threat. The animation ends with a black screen, leaving the viewer in suspense until The Puppet appears, introducing the world of Five Nights at Freddy's 2.

Link
NOTE : The following video contains a screamer!
 * youtube.com/watch?v=5QqwsQwHPj4