William Afton, a British man who had possessed the damaged Spring Bonnie animatronic after dying in it, had been in Hell for a whole year. Every day was suffering until midnight, upon which he started a challenge. If devils taking the form of certain animatronics shrieked in his face at any point during the following six hours, his suffering resumed until midnight struck again. But if he lasted until six in the morning, he got a break from the suffering until midnight, though there was little for him to do.
The devils took the forms of Freddy Fazbear and Foxy as they appeared back in 1993, Chica and Bonnie from both 1993 and 1987, Toy Freddy, Bonnie, and Chica, Mangle, Balloon Boy, the Puppet, Golden Freddy as he appeared back in 1987, Afton's past self back when he was Springtrap, Phantom Freddy, Mangle, and Balloon Boy, Circus Baby, Ballora, Funtime Foxy, Ennard, Helpy, Number One Crate, Mr. Hippo, Ned Bear, Orville Elephant, Rockstar Foxy, Music Man, El Chip, Funtime Chica, and Phone Guy. Overall, it was thirty one devils in various forms.
If Balloon Boy got in his office, the Phantoms shrieked in his face, Number One Crate blasted music in his ears, El Chip or Funtime Chica distracted him, or Phone Guy called him, those didn't count as defeats.
The first few nights were the hardest, with Afton being defeated in less than a minute each time. But as William got more familiar with the way the challenge worked, he started winning more and more, though the devils went easy on him after not holding back those first few nights.
Afton wondered what he looked like now. After winning one challenge, he had no one to talk to but said, "If any of you can hear me, what do I look like? Do I look like a living human? Or do I look more like what was left of my corpse in the Spring Bonnie animatronic?"
A devil in the form of Balloon Boy appeared and said, "Have you never thought to look down at your own body?"
William did so and noticed he was in all purple with a yellow badge on his chest. His hands looked how they did in life. He asked, "If I looked like my own corpse here, how do you think I'd operate the machines?"
Balloon Boy replied, "Given that the most intact part of your corpse within Springtrap was your head and you somehow had ankle guts, you should be grateful you take this form."
One time, William forgot to wind up the music box and the Puppet, also known as the Marionette, went after him. After they shrieked in his face, they said, "Remember that I'm a devil in the form of the Puppet. I'm not the real Puppet."
Many of the characters who could cause William to lose the challenge had something to say afterward. Once, when Foxy defeated William, he said, "Yarr, Freddy Fazbear's Pizza Place be the new location open right now!"
William learned signs that he was about to lose the challenge, from Withered Chica getting stuck in the front vent due to being overweight despite being an animatronic (she'd get free and kill him if she got stuck), Foxy's parts piling up in the office, Mangle appearing in the office, and the game over screen on Five Nights with Mr. Hugs. The last one was a game Afton had to help Toy Freddy with since Toy Freddy, despite being a gamer, sucked at it despite how easy it was (there were just three cameras, all of which had a way into the office in that game, and you had to find the one Mr. Hugs was on and close the appropriate door) and would blame William if he got jumpscared, upon which he'd storm to the office to defeat him and ignored the doors.
The cameras revealed that Afton's personalized Hell had the same shape as Freddy Fazbear's Pizza did back in 1993… but there were plenty of differences. For one, there was a single camera for each hall as opposed to there also being a corner camera for each hall. The Supply Closet and Pirate Cove were where they belonged, but where the restrooms belonged was Funtime Cove, where Funtime Foxy hid until the top of an hour. If the devil taking the form of Funtime Foxy was active on a night, the sign in front of them said what hour "showtime" was, the start of that hour being the moment Funtime Foxy would kill Afton if he wasn't looking at Funtime Cove. If he was looking at Funtime Cove when Funtime Foxy was active and showtime was scheduled to start, it would be pushed back by an hour. But as William found out the hard way, if showtime was pushed back to six AM and he wasn't looking when it struck six, that counted as a defeat. There were nights where showtime started at 7 AM, meaning that it wasn't a factor that night since the Funtime Foxy devil, like the others, never shrieked in his face afterwards… as long as he won.
Instead of a Show Stage, there was a Prize Counter selling a plushy of Circus Baby. The way Baby worked in Afton's hell was that she appeared in one of the halls, approaching the office. If she got too close, she'd shriek in his face and that counted as a loss. Not even the doors stopped her. The way to stop her was to gather enough coins, which he could tap as they appeared on the camera to collect, and purchase the plushy of her. The price varied depending on the night.
Instead of a backstage area, there was a Parts and Service area. It was where Toy Freddy played Five Nights with Mr. Hugs.
The office itself had two power lock doors to either side, a side vent near the door on the right with another power lock shutter, a front vent with a power lock shutter, two giant hoses attached to the ceiling connected to the duct system, one of two air vent passageway systems and the one Mr. Hippo, Ned Bear, and Orville Elephant were in, and two hidden doors that couldn't be closed. The hoses could alternate which one was shut and which one was open, meaning there was always a closed and an open one. The other air vent passageway system that Afton could monitor connected to the vent on the front and was how Withered Chica, Springtrap, Mangle, and Ennard could get into the office.
Various nights seemed to be special challenges that rewarded labeled stars on the wall behind William. Some were numbered, with higher numbers being harder versions. The highest number a group of challenges could consist of was three, though for the ones that had two, the stars for each were larger. The standalone star challenges were represented with stars that were larger still.
After several weeks since he got all of the challenge stars, William got a bronze trophy replica of Freddy as he appeared in 1993 on his desk after winning a round where twenty five of the thirty one characters were as hard as they could get. A month later, he got a larger silver replica of the same Freddy for winning a round where twenty eight of the thirty one were as hard as they could get. A year after that, he won a round with the equivalent score of one character at zero and the other thirty at twenty, seeing a black room with Golden Freddy as he appeared back in 1993 convulsing in the center.
