A young homeless boy named Gregory had befriended Glamrock Freddy, the mascot of Freddy Fazbear's Mega Pizzaplex. Gregory was convinced the other animatronics and Vanessa, the night guard, were all out to get him.

Gregory and Freddy were in the green room for the latter. The young boy looked out the window and saw Vanessa, who said, "Hello? Little boy? If you're down here, say something!"

Freddy saw her too and asked, "Why don't you want me to notify her?"

"Because she's not to be trusted!" Gregory replied.

"But why?"

"I just have this feeling,"

"Anyway, here's a novelty Faz Watch. We can remain in contact as you work to free me from this room."

Gregory sneaked out through an air vent large enough to fit him. He heard Roxanne Wolf complement herself, Glamrock Chica eating food despite not having a stomach or digestive system, and Montgomery Gator throwing a temper tantrum over how Freddy malfunctioning on stage ruined a show. Gregory realized he was unsure how he could sneak into the opening chest Freddy had when it wasn't designed to hold people and someone should have noticed if he did it while Freddy was in public. He learned he was in Rockstar Row since that was where all four of the green rooms were.

Gregory discovered that he needed a "Photo Pass" to free Freddy, so he found one at the entrance. After getting the door open from the outside and freeing Freddy, Gregory said, "Your stomach hatch seems like it would be a useful hiding spot. Can I use it?"

"It's not safe! It's meant for birthday cakes, not people,"

"Living on the streets taught me a lot of skills,"

"We're headed for the utility tunnels. You're bleeding, so we're going to the first aid station."

When he made it there, Gregory hid and watched Vanessa and Freddy argue over things he didn't understand. When Vanessa left through a gate, closing it behind herself, Gregory went back inside of Freddy, who realized he was low on power and went into a recharge station. This meant Gregory was on his own. He rushed towards the lobby entrance and saw the shutters close around the door. A PA system claimed they would open again at six in the morning. It was now midnight. Gregory saw a staff robot and said, "Hello?"

One called Chica, Monty, and Roxy to him, all three of them chasing him. Roxy said, "What are you doing here after hours?"

"Pizza?" Chica said.

"Why are you running?" Monty said.

Rather than answer, Gregory continued to flee from them, entering the turnstiles with the photo pass, though it needed more to access the other areas. Going to a gift shop, he found a fridge magnet for a "Glamrock Bonnie" character, an electric blue rabbit. When he found a machine to add more access to his photo pass, it "ate" his pass by taking it without dispensing anything, so Gregory used the Bonnie magnet on the machine to cause it to malfunction. It let him access the photo pass areas and now let him access the daycare.

In the daycare, Freddy used the watch and said, "Gregory, you must have security badge clearance to let me in. There should be one in there,"

Gregory slid down a slide into a ball pit, seeing an acrobatic sun animatronic jump in with him and grab him. This, the Sun form of the Daycare Attendant, was loud yet friendly, though they warned him not to turn the lights off. Gregory saw a badge, but the Daycare Attendant didn't let him move, so he knocked down a tower to distract him and grabbed the badge. The lights went out and the Daycare Attendant turned into their Moon form. Gregory attempted to get out of the Daycare, but Moon said, "You don't get to leave until light rises,"

The young boy assumed he meant when the sun rose, but he decided to turn the lights back on. When he succeeded, he rushed for the exit. As he left, the Attendant, now back as Sun, said, "Wow, you left on your own! You're banned from the Daycare, so never come back!"

Gregory went back into Freddy and they continued to get more security badges until Vanessa caught Gregory by herself and keeping him in a room. She appeared on a monitor and said, "This is not the night to be wasting my time, Gregory! Yes, I know your name. Wait right there in Lost and Found until either your parents or police arrive,"

Gregory thought about how he never remembered his parents. He assumed she wouldn't be able to hear him if he admitted then and there to being homeless, so he searched for a way out, found a screwdriver, and went into another air vent large enough for him to crawl through. When he found Freddy again, Vanessa was in the process of removing the Freddy shell from his endoskeleton and placing it in a new one. After she left, failing to notice that Gregory had left the Lost and Found, the old Freddy endoskeleton said, "Gregory! You can still cling onto my spine and have me carry you around!"

"What about the new Freddy?"

"Call that one 'New Freddy' and call me 'Old Freddy'. Those names seem familiar…"

Old Freddy, despite just being an endoskeleton, was still quite strong. Gregory attempted to decommission the other three animatronics, but since he started with Monty in the hopes of getting his claws, Monty caught him. Gregory expected to die, but Monty said, "Hey, little guy! If you had stayed put, it would have been easier for all of us,"

Gregory was surprised and said, "You… don't wanna kill me?"

"What?! No! We just wanted to find a safe place for you until you could leave!"

"'We'?"

Chica and Roxy appeared. Roxy said, "Yeah, kiddo. You made it far messier than it had to be. Now the old endoskeleton that used to be Freddy is in public view and so is the new endoskeleton in the Freddy shell,"

"But it's closed for the night," Gregory said.

"Maybe we could use this opportunity to bring back Bonnie," Roxy said.

"What happened to him?" Gregory said.

"We don't know," Monty said.

"Maybe we could look for him?"

Now knowing that he was safe despite how scary the footsteps of the animatronics could be, Gregory reunited with Old Freddy and the two went searching for Glamrock Bonnie.

An hour of searching led them to find him behind the out of order curtain in Bonnie Bowl… but he had been damaged. He was an electric blue rabbit animatronic with red eyes, a round, white muzzle (his stomach and the inside of his ears were also white), a red jumpsuit, a purple neck collar with a faded yellow star on it. Bonnie saw the other animatronics and said, "Guys…?"

"What happened to you?" Gregory asked.

"Management tried to replace me and claimed I retired and gave my place up for Monty. Can you all help me down to Parts and Service?"

Gregory did little to help because, being an animatronic, Glamrock Bonnie was heavy. Monty, Chica, Roxy, and New Freddy did most of the work carrying him. Old Freddy said, "Bonnie, I used to be the endoskeleton in the Freddy shell. The one in that shell now is a different endoskeleton that still plays the role of Freddy,"

"What are you talking about? I'm Freddy!" New Freddy said.

Gregory walked with them until they all made it. Roxy said, "Management doesn't treat us well. And they don't treat their human employees well either. Some within the company say it's a far cry from Freddy Fazbear's Pizza Place… back when Fritz Smith ran it,"

"What happened to it?" Gregory asked.

"Fritz got laid off because his boss was demoted to the position Fritz held. And said former boss gave into management pressuring him to cut corners and costs more often. And its infamous rubber ducky 'pond' had the most valuable ducks marked by patrons so others could see which ones to pick, costing that place a lot of money through the discounts those ducks offered. But that place somehow earned enough money to warrant making this one of a kind location with all of us," Old Freddy said.

When Bonnie was on the "operating seat", he said, "Should we just leave me here for someone who knows what they're doing?"

"If management tried to dispose of you, a sentient being, then maybe we should try to fix you."

Rather than use hard plastic shells, Gregory covered the various holes in his casing with fabric. Bonnie said, "Um… I'm not quite sure I like this,"

"But it's better than you were before, right?" Gregory asked.

Bonnie replied, "Yeah, I suppose. Now what do we do about Old Freddy, as you call that endo?"

Six AM came before they could come up with an answer and Gregory said, "Oh! I wanted to leave this place! … But I don't have a home out there,"

Vanessa showed up and said, "Do you plan on moving in, little man?"

That spooked Gregory because she sneaked up on him by accident. He said, "Did you hear what I just said?"

"Yeah, you're homeless. I'd let you move in, but it wouldn't be my decision. Also, I have an idea as to what we can do with Old Freddy."

It took several days, during which Gregory started living in the Pizzaplex, but the endoskeleton that used to be Glamrock Freddy became a new character called Glamrock Mr. Hippo. The endoskeleton retained memory of his time as Freddy… and had the same voice. Management let Glamrock Bonnie stay in Bonnie Bowl because either they wouldn't confess or weren't the ones responsible for what happened to him.