(I know Bonnie is a guy in the game, but in this, Bonnie is a girl, deal. Also, the story is mostly from Bonnie's POV)
Once adorable little kids turned into animatronic animals by soul bondage, now Bonnie, Freddy, Chica and Foxy are scrap metal. Parts for the so-called 'New Face' of Freddy Fazbear's Pizza. And it's the same every day. They sit and wait for 12 AM, whence they can finally roam around, and get revenge on everyone. But after seventeen weeks of this torture, Freddy grew tired and, well, decided to talk to the manager. So, once they get revenge on the manager, they will find a way to releive themsleves of their mechanical form. But to do that they need help from the security guard.