Here we see the man in D-Class containment and he was trying to get out of the cell, his name is Markiplier.

Markiplier: "How did I get in here!?! Where am I?! Where's Wilson!? Okay I need to get all the panic out and then I'll calm down. OH MY GOD I'M GONNA DIE HERE AND I WILL BE TORN TO SHREDS BY SCPS OF ALL KINDS! AAAAAAAAAHHHHHHHHHH!!!!!!!!! I'M GONNA DIE HERE!!! WHERE'S WILSON!? Okay that's all."

Markiplier then opens the empty D-Class Cell and then he walks down the halls of the Foundation Site.

Markiplier: "This is just like in Containment Breach, except it's a lot more real and a lot more dangerous and you have no idea what other terrifying things that might kill you."

???: "Hey did you hear something?"

Markiplier: "Ah! Uh where to go, where to go!?!"*sees a door*"Oh yes, a door!"

Markiplier then went into the room and then he saw a very familiar face and it's SCP-173.

Markiplier: "173! Okay Mark, whatever you do, don't blink."

We then see Markiplier keeping his eye on SCP-173 and he then gets out of the room and closes the door keeping SCP-173 in the cell.

Markiplier: "Oh man, I don't know what's scarier. The real 173 or the video game one."

Markiplier then walks around the site and then he comes by another door and then he sees SCP-682 in the room.

Markiplier: "Nope!"

Markiplier then makes a run for it and then goes into another room and rests and then sits down.

Markiplier: "Oh man, can this day get any worse?"

???(Mr. Fish): "Hello there."

Markiplier then looks up and then sees Mr.Fish and then he screams at the top of his lungs and then runs away.

Mr. Fish: "Was it something I said?"

We then see Markiplier running around the site and then he trips himself into a cell and then bumped into a button and then turns to see SCP-682's acid tank draining and then SCP-682 bursts out of his containment cell and sees Markiplier. We then see Markiplier screaming and running away from SCP-682 and Markiplier then goes into a corner and then he sees SCP-682 walking up to him.

Markiplier: "I'M GONNA DIE!!!!!"

Then suddenly SCP-682 then feels a tickle sensation and then laughs as Markiplier then sees SCP-999 tickling SCP-682 as 682 then passes out. SCP-999 then goes to Markiplier's leg and then hugs his leg.

Markiplier: "Okay, that's strangely cute."

Markiplier then feels a hand on his shoulder and turns to see a man in a purple hoodie.

Markiplier: "PURPLE GUY!?!!"

(Y/N): *pulls down the hood*"Check out my new hoodie, name's (Y/N)."

Markiplier: "Are you here to kill me?"

(Y/N): "No just here to get 682 back into his cell."*to 999*"Nice work 999."

Sometime later, SCP-682 is back into his containment cell and then we see you talking to Markiplier.

(Y/N): "How did you get here?"

Markiplier: "I was teleported here and then I was running around this god awful place and then I am here with you."

(Y/N): "Well from what I can understand you have some experience with dealing with SCPs in a simulated environment which is this game called SCP Containment Breach."

Markiplier: "Yeah people made a mod about me being part of the game entirely, my face was on everything."

(Y/N): "That explains the fuck out of the incident back in Site-19."

Markiplier: "What do you mean?"

(Y/N): "We have a pataphysics department that studies narrative anomalies."

Markiplier: "Okay then, I didn't know you guys were alive."

(Y/N): "That's the world of the Anomalous, it's always unpredictable to the naked eye. So would you like to join?"

Markiplier: "Okay wait hang on, even if you people didn't want to kill me-"

(Y/N): "Not really, we would just administer amnestics."

Markiplier: "And if I'm willing to join you guys, which I'm not! What do I get out of this? Psychological damage? A horrible and gruesome death? 35 years of life in prison with a cellmate named Buffalo Fricken Bill!"

(Y/N): "How about getting to be my partner and you can help me out. Going to a Prison for Fish will be a good start, in fact you are perfect for the job."

Markiplier: "Fine!"

(Y/N): "Great, and in the meantime, you can stay at my place. I always wanted a roommate."

Markiplier: "I don't know the upsides to working in this god awful place!"

(Y/N): "You can face off against SCPs in real life now, you have the confidence to face off against monsters before, and now this is the job for Markiplier."

Markiplier: "Yeah.....yeah! This is the job for me!"*to a certain direction*"Hello everybody my name is Markiplier and I am working for the SCP Foundation!"

Next: Chapter 37: SCP-6222 "FISH PRISON"