Third Person POV:

Wayne Manor, Westchester County

Kate was returning from a long night of patrol without Y/N and Dick due to the fact that she wanted to pursue a clue on Maya Lopez' whereabouts

Kate: I'm home!

Kate tries calling for someone, but nobody answers

She then feels a shiver down her spine, like someone was watching her in the dark hallways of Wayne Manor

Kate draws her bow and arrow when she hears something behind her...

Whithout excitation, she shoots without looking, hitting someone sitting on a chair

A girl sitting on the chair with a special bracelet blocks the shot and turns on the light

Kamala: Kate Bishop...did you really think you were the only kid superhero in New York?

(Played by Iman Vellani)

Emerging from the shadows, the young girl offered a smirk, her presence commanding yet playful. The light revealed her identity unmistakably. Kamala Khan, also known as Ms. Marvel

Kate: I'm...23.

Kamala: Oh, I know...

She pulls out a special tablet containing information about Kate 

Kamala: ...And your boyfriend is 25. You two are a small part of a large universe, Kate Bishop...and I'm putting together a team to-

Then, a voice cuts her off

Dick: Three...

Dick, who was there in the shadows all the time, emerges and smiles at Kamala

Dick: You bypassed our security protocols because we wanted you to. Or did you think it would be that easy?

Kamala: I...thought it was that easy. You must be Robin...Batman's sidekick.

Dick: Fury was monitoring us, wasn't he?

Kamala: How did you know it was Fury who gave me this info?

Dick sighs

Dick: Let me show you something.

The three of them go to the secret elevator behind the clock

When they get down there, they see Alfred there, sitting on the front of the computer, accompanied by Lucky

Kamala looks amazed by all the stuff at the cave

Kamala: Whoa...

Alfred: Ah...you must be Ms. Marvel. Master Wayne told me we'd be having visitors.

Kamala: He knew I was coming?

Kate: He anticipates everything, don't worry. Where is he now, Alfred?

They then hear a voice coming from the Batcomputer's speakers

Y/N: Someone put this animal back in his cell!

They all look to the screen and see that Y/N has taken down Victor Zsasz 

Alfred: That's...Arkham Island to you, Ms. Bishop.

Kate's eyes widen as she puts on her earpiece

Kate: Shit...I'm going there.

But just as she was about to get on her motorcycle, Y/N calls her out

Y/N: Joker's got bombs all over the island. No one gets in, no one gets out. Stay out of this.

Kate: Fine...but please, keep us updated.

Y/N: Yes ma'am.

Meanwhile, at Arkham Island

Y/N just finished handcuffing Zsasz after talking to Kate

Y/N: Alfred...is Ms. Marvel there?

Alfred: Positive, sir.

Y/N: Hand her the files on the team. I know she's looking to assemble a new team. Smallville first, then the others. She needs to know what she's coming up against. Show her the flight patterns and the New Guy on New Jersey. I'll stay in touch.

Alfred: Copy that, Master Wayne.

After that, Batman sees the asylum's televisions turning on and Harley Quinn coming up on them

Harley: Can ya hear me? Is this thing on? Oh hiya B-Man. Harley Quinn here. How do you like my new uniform? Pretty hot, huh?

She was sporting a nurse outfit from the Arkham staff

Kate, who was watching all of this from the Batcave, decides to talk on Y/N's ear

Kate: That pick me bitch...

Harley: Oh, and I got something to show you.

She shows Warden Joseph tied to a chair

Harley: Oh, and in case ya haven't figured it out, today's the Joker's big homecoming. And you're the guest of honor.

Y/N: You have one chance to surrender, Quinn.

Harley: Tempting, Bats, but no dice. Now the inmates are running the asylum. Well, technically they're Joker goons shipped in from Rikers, but you get the idea. Bye bye for now!

She then smashes the camera, therefore ending the transmission

After that, Batman gets a call in his earpiece

Barbara: Batman, you picking this up?

Y/N: Batgirl...I'm here.

Barbara: Oh...Batgirl is my hero name. Call me Oracle...it's my tech expert name. And I'm seeing that Arkham Asylum completely vanished off the network

Y/N: Joker's in control of the security system. He's probably isolated it from the grid.

Barbara: What about the bombs? Do you think he's bluffing?

Y/N: I don't know...and I rather not risk it.

Barbara: I'll try to recover the comms feed for you.

After that, Batman keeps on trying to find the Joker in the asylum

He then eventually finds the clown standing on top of a special cell

Joker: Well, what took you so long?

Y/N: There's no escape, Joker. I will find you.

Joker: Oh, I'm counting on it. Just not yet!

Joker then stomps his foot on the cell, making its door fall down, revealing a big, monstrous creature

Joker: He's a big one!

The creature then charges at Batman, but the vigilante evades its attacks

The monster starts breathing heavily and eventually falls to the ground, making Y/N activate his detective vision out of curiosity

Somehow, it suffered a cardiac arrest

Joker: Oh boy...note to self. Need stronger test subjects. Okay Bats...seeing as how I'm feeling generous, I'll give you this one for free. Knock me off, I dare you! End this, pull the plug and stop me once and for all.

Y/N grabs a batarang and threatens to throw it at Joker, but doesn't do so, making Joker laugh

Joker: You're becoming so predictable, Bats. I'd love to stay and chit chat, but I have a party to organize.

The cell Joker was standing on eventually gets transported via some cables to some other part in the asylum

Batman then goes to talk to one of the guards in the control room

Guard: Batman...thank God. They came out of nowhere. I dragged Jerry in here and powered up the gate. I must have passed out because I don't remember anything.

Y/N: Joker went through that door. What's on the other side?

Guard: We call it Extreme Isolation. Only way in is via the transport system.

Y/N: Open it.

Guard: Sure. I'll just have to call another cell.

The guard starts typing something on the keyboard, but notices something off about it

Guard: Something's wrong...the main security loop is locked.

Just as the guard says that, Joker appears on one of the monitors and starts speaking

Joker: Having a little trouble up there?

Y/N: I told you once, Joker...there's no escape.

Joker: And who said I want to escape? I'm having way too much fun.

Y/N: Not for long.

Joker: Oh, and I almost forgot. Just in case you were planning on following me. I've arranged a little insurance. Gordon is on his way to Harley as we speak.

Joker turns his camera to another monitor and shows video footage of officer Frank Boles hitting Gordon in the back of the head with a club

Y/N: Officer Boles...

Guard: He's...he's got commissioner Gordon! What are you gonna do?

Y/N: I'm going to rescue Gordon. Then, I'm gonna make sure Boles leaves this island on a gurney.

After all of that, Y/N continues to explore the asylum in order to save Commissioner Gordon

He gets in an elevator and hears Joker's voice

Joker: Boom! Did I scare you, Bats? No? Okay...then get ready to face your worst fears.

Y/N starts sensing a strange smell in the elevator when he hears a familiar voice

Gordon: Batman...help me, please!

Y/N starts feeling dizzy and confused

The elevator door then opens and reveals a hallway with a dead man's body at the end of it

He approaches the body and sees...James Gordon there, his lifeless body leaned against the wall

Y/N: I'm sorry Jim...

He tries calling Barbara, but with no success

Batman then walks around the hallways of the facility, entering the morgue afterwards

He notices that there are three body bags, all of them are moving, making Y/N wonder if this is really happening

Y/N opens the first body bag, revealing the zombified corpse of his dead father to him

Y/N: Da...Dad?

Thomas: You should have stood up to him, son. Like a man!

His hands start shaking and he walks away, going for the second body bag

When he opens it, he sees his mother, wearing the same dress she wore the night she was killed, along with her fancy necklace

Y/N: Mom?

Martha: Help us, Y/N! Do not let us die!

His breathing starts getting heavy, looking like he was on the verge of a panic attack

He notices the third body bag in the room moving and decides to open it

As Y/N opens the third body bag in the morgue, a shocking revelation awaits him. Instead of encountering a zombie vision of a loved one, the bag contains the menacing figure of Scarecrow. One of the numerous villains in Y/N's gallery in the last few months

The twisted mastermind, known for manipulating fears, emerges from the confines of the body bag

Scarecrow: You're in my world now, little Bat!