-Arkham City-

Harvey Dent's Campaign Office

Several thugs resembling Two-Face are standing around when one of them discovers a hidden safe behind a painting. "Look what I found!" The thug exclaims as he approaches the safe, only to be stopped by another one of the men.

"Don't touch it, man. He'll kill you!" The second thug warns, referring to Two-Face.

"How long till the boss gets here?" A goon asks an obese thug.

"He'll be here." The fat goon says as he looks at a rather scrawny henchman.

"Riley said the saw the Bat. Is he here too?" The scrawny man asks.

"In Arkham City? Why would he come here? You guys just need to chill the hell out." As soon as the fat thug says this, a window shatters, causing all the men to assume fighting positions and look at the source of the noise.

"It's Batman!" A thug shouts in response, only to be proven wrong. It wasn't Batman that broke the window, but it was Catwoman instead.

"Sorry to disappoint you, boys." Catwoman says in a slightly flirtatious manner as she unsheathes her claws from the tips of her gloves. "It's just little ol' me."

The thugs charge at Catwoman, who easily outmaneuvers the larger men due to her slim figure and lighter weight. Within a full minute, all the men are knocked out cold as Catwoman walks towards the exposed safe. "Ahhh...Now that they're all taken care of, it's time to get what I came for out of that safe." She says as she saunters to the safe and cracks it. "Try and get one over me, will you, Harv? I don't think so.." She says as she grabs a small electronic chip and inserts it into her phone, which displays schematics for a building in Park Row. As this happens, Catwoman if too focused on it to notice Two-Face planting the barrel of his handgun to the side of Catwoman's head.

"Get your filthy paws off of that. Now." Two-Face growls.

-Later-

Outside of Arkham City

Several news stations tune in to a news conference where Bruce Wayne is speaking against the construction of Arkham City in the hopes of having the mega-prison closed and shut down for good.

"This is Gotham News' Vicki Vale reporting live from Arkham City; the controversial super-prison built right here in the heart of Gotham. In a few moments, Bruce Wayne will be live on stage to explain his sudden interest in Gotham politics. The infamous playboy millionaire has never been one to-" She begins to report, only for Bruce Wayne to walk into frame and interrupt her.

"It's billionaire, Vicki. Millionaires are so last year." Bruce says as he walks onto the stage. "Thank you! Thank you, Gotham City." Bruce says as several people clamor in front of him and take pictures of him while ravenously asking questions. "Imprisoned behind these walls, gang leaders are fighting a bloody war in the middle of our once great city. Every inmate from Arkham Asylum and Blackgate Prison has been relocated to this facility. How can this be safe for the people of Gotham? Today, I'm starting the campaign to close Arkham City and make Gotham safe again." As Bruce says this, several armored trucks pull up, the name 'Tyger' etched on the side as armed men step out and march towards Bruce Wayne.

"Spread out! Remember, Wayne is the priority target." One of the militiamen says over his radio as Wayne is surrounded and knocked unconscious.

-Later-

Dark Room

After a long period of time, Bruce wakes up, his wrists and ankles shackled as a bald headed man with a beard stands in front of him, his name tag reading, 'Warden Hugo Strange'.

"I feel I should thank you. Capturing Bruce Wayne is so much easier than Batman. And now that we have you, Protocol Ten is almost ready to begin. It will be my legacy, a monument to your failure as well as that brutish monster. And if you try to stop me, I guarantee everyone will know your secret, as well as his." Hugo Strange says menacingly as he walks out of the dark room, leaving Bruce alone as the lights blast on, practically blinding Bruce with its intense light as a loudspeaker plays a message from Hugo Strange. "You are mine, new inmates. Let me introduce myself. I am Professor Hugo Strange and I am in charge of the Arkham City Facility. Up until this point, you have shown a total disregard for the law, for society and yourself."

Unwilling to listen anymore, Bruce tips the chair he's sitting in, which sets off an alarm as a TYGER guard rushes in. "What the hell are you doing? Did you think we wouldn't hear you?" He asks as he kicks at Bruce, who catches his leg, dislocates it, and headbutts him hard, managing to grab his walkie talkie as the guard writhes in pain. Bruce manages to swipe the encryption card from the walkie talkie as another TYGER guard storms in and slams Bruce's head against a TV monitor, dazing him as the guard drags him out of the room and tosses him onto the floor of an area filled with other inmates.

"Wayne! You're in line A. Move it, rich boy!" A TYGER guard shouts, aiming his assault rifle at Bruce, who slowly walks over to where he's supposed to go. Once he reaches the front of line A, a metal detector goes off, prompting a jumpy TYGER guard to hit Bruce with the butt of his rifle.

"Lower your weapons." Hugo Strange says, standing among two other TYGER guards, who have their guns aimed at Wayne. "Mr. Wayne will not be any trouble. Will you...Mr. Wayne?" He asks Bruce tauntingly as he looks down on him. "The cuffs can stay on. We don't want to make things too easy, do we?" He asks as Bruce is shoved into a chamber along with Jack Ryder and an unnamed man.

"Prepare for insertion!" A TYGER guard shouts as a door closes behind Bruce, trapping him with the two men.

"I can't believe I'm gonna die in here." The man says as Jack Ryder turns around and looks at Bruce Wayne.

"Bruce Wayne? Great." Jack Ryder mumbles. "There I was reporting on your crummy press conference, and now here we both are. I guess that'll teach you to get involved in politics, won't it?" He asks before looking away from Bruce.

"Listen to me carefully. When they open the door, do not panic. Stay close to me." Bruce sternly says, getting a look of bewilderment from Jack Ryder.

"You think I'm taking advice from some guy who's never even been in a fight?" Jack asks, not knowing who Bruce really is.

"Stay calm, Ryder. They're trying to scare us." Bruce says as one of the walls rises up, releasing them into Arkham City.

Ryder and the man ignore Bruce's advice and blindly run out. "Sorry, man. It's every man for himself!" Jack says, immediately getting ambushed by a couple of goons who incapacitate the unnamed man while a fat goon starts pummeling the defenseless Jack Ryder as three other men approach the still shackled Bruce Wayne, who easily subdues his assailants despite the cuffs. He then approaches the battered Jack Ryder.

"On your feet, Ryder." Bruce beckons before pulling him up. "I said, get up." He then drags Ryder towards a gate, only for it to open, revealing Penguin on the other side, as well as several of his men as a man hits Bruce from behind with a pipe, making him fall to his knees as he gets hit again, this time at the back of his head. As Bruce's vision begins to blur, Penguin stands over Bruce.

"Lights out, rich boy!" Penguin says as he stomps his foot to Bruce's face, knocking him out as Penguin's men drag his unconscious body deep into Arkham City.

-Several Minutes Later-

Bruce wakes up in an undisclosed location, still in shackles as he's dropped onto his knees in front of Penguin. "Wakey-wakey, Wayne!" Penguin taunts as Bruce slowly regains his senses. "Oh, what's up? Do you need me to call your butler? Or your big, green bodyguard?" Penguin taunts further.

Bruce's eyes readjust as he looks at the dwarfish man. "Cobblepot!"

"Aw, you remember me. I'm touched!" Penguin says sarcastically as he slides a gold knuckle braced on his left fist. "Your family destroyed mine, Wayne. This...well, let's just call this good, old-fashioned revenge." Penguin rears his arm back to punch Bruce, only for him to catch his arm and break his arm at the wrist. "Ahhh! Get him! Ahh! Hurt him! I think he's broken my bloody hand!" Penguin complains as his men fight Bruce, who eventually breaks the chains that limited his movement. After defeating Penguin's men and knocking Penguin himself out for good measure, he climbs to the roof of a building and contacts Alfred through a communications device built into his watch.

"Alfred, have you got my location?"

"Only just, sir. There's more interference than usual." Alfred replies.

"I need an immediate drop on the roof of the Ace Chemicals building. I'm on my way there now." Bruce says.

"Of course. Shall I arrange for the other Master Bruce to join you?" Alfred asks, referring to Bruce Banner.

"Yes. Arkham City might contain everyone we faced at the asylum last year. I'll probably need the muscle." Bruce says, figuring Hulk could be of great assistance again.

"I'll relay the message, Master Bruce." Alfred says as he ends the call.

-Prince Manor-

At a luxurious mansion sitting by a beautiful lake, Bruce Banner and Diana Prince sit in their room, playing with their adorable infant son Atreus when Bruce answers a phone call from Alfred. "Hey, Alfred. What's up?"

"Ah, Master Banner. I hate to interrupt you, but Master Wayne has been wrongfully locked up in Arkham City."

"The new mega-prison complex in the middle of Gotham?" Bruce asks.

"I'm afraid so, yes. He has asked that you join him. Says he'll need your 'muscle' to make it through the night."

"You mean the Hulk. Great. You know, I was really looking forward to spending the night here at home with my family." Bruce says, clearly not at all excited about being in a mega-prison full of the villains he defeated a year prior.

"And I apologize, but I'm sure it'll be over before you know it." Alfred says, hoping Bruce will consider it.

Bruce sighs as he nods. "Fine. I'm on my way." He says as he hangs up and walks over to Diana.

"You're leaving?" Diana asks, to which Bruce slowly nods in shame.

"I really, really wish I wasn't, Diana, but Alfred says Bruce is in trouble, and he might need my help. I'll be careful." He says as he kisses her cheek.

"Come back in one piece, my sweet." Diana says, hoping he'll be okay.

Bruce nods as he puts on his uniform pants and boots. "I always do, beautiful." He says before driving towards Arkham City.

-Arkham City-

Ace Chemicals Building

As Bruce Wayne shimmies along the side of the Ace Chemicals building, Alfred contacts him again. "I watched your incarceration on the evening news. Was getting yourself arrested a part of your plan all along?"

"Heh. Not exactly, although I did get some one-on-one time with Hugo Strange." Bruce says.

"And how was that?" Alfred inquires.

"Not good. He knows me and Bruce's identities. He also told me that something called Protocol Ten will make him famous. I can't leave Arkham City until I find out what it is." Bruce says with determination. As he gets closer to the roof, the Batwing drops a large metallic capsule onto the roof.

"Did it arrive, sir?" Alfred asks right after the capsule makes contact.

"Right on time. Where's Bruce Banner?"

"My scanners show he's right outside the walls of Arkham City."

-Outside Arkham City-

Bruce Banner parks his car outside the mega-prison and realizes the only way in...is through the sewers. He groans to himself as he enters the cluttered sewer and approaches a manhole cover that'll lead to right outside the Solomon-Wayne Courthouse.

-Ace Chemicals Building Rooftop-

Bruce Wayne makes it to the roof and presses his palm onto a scanner on the front of the capsule. It reads his genetic marker and opens, revealing a fresh Batsuit, which he puts on. As he looks over the area, he contacts Alfred. "Alfred, I took an encryption key from a TYGER guard. I'm going to hack into their communications." Batman says as he slides the card he took from the walkie talkie into his Cryptographic Sequencer, quickly finding and isolating the TYGER communications network, hearing a broadcast from a TYGER helicopter.

"All units, this is AIR TYGER 4. We have confirmation that Prisoner 4011 is in the Courthouse. I repeat, Catwoman is in the Courthouse."

"Is she in danger?" Hugo Strange asks, joining in on the broadcast.

"Affirmative. Target is being held by Dent. We believe he intends to kill her. How should we proceed?"

"Hehehehe. Stand down. Let Two-Face have his fun." Hugo Strange answers coldly, not caring what happens to Catwoman.

"Understood." The pilot says as he hovers the helicopter above the courthouse, not noticing Bruce Banner climbing out of the manhole in front of the courthouse, getting the attention of several inmates, who attack him, only for Bruce to transform and easily deal with them with a couple of punches.

"That doesn't sound good." Batman says in relation to Catwoman's current situation.

"No, it does not. Mister Dent's predilection for all things may not bode well for Miss Kyle." Alfred says.

"If there's one person in Arkham City who knows what's really going on, it's her." Batman says as he sees Hulk standing over the goons he took down. "Alfred, Hulk is in Arkham City. I'll fill him in on what's going on." He says as he glides down and meets up with his comrade. "Hulk."

Hulk looks down at his smaller ally. "Bat. It's been a while."

"Yes. Sorry to drag you into this, but I thought I'd need your help."

"What do you need?" Hulk asks as he crosses his arms.

"Catwoman. She's being held hostage by Two-Face in that courthouse. I'll need your help to rescue her." Batman says, to which Hulk nods.

"Let's go save her." Hulk says as the two enter the courthouse.

-Solomon-Wayne Courthouse-

Once inside, Hulk and Batman walk into a viewing platform, seeing a large congregation of Two-Face's henchmen in a trashed courtroom, with Two-Face standing on an elevated platform.

"The only way to get by in this place is to get ourselves some respect." Harvey says. "Fear. That's how we get respect. Show them all how we do things." Two-Face sneers. "We should be fair, though. This is a place of Justice, after all." Harvey says calmly. "Screw justice. Kill her and they'll all fear us." Two-Face snaps back as he looks at his supporters. "Bring out the defendant!" He orders as a curtain drops into a tank of acid, revealing Catwoman, who is hanging above the acid upside down.

"You certainly know how to keep a girl hanging, Harv." Catwoman suggestively says. "Hey...have you had some work done?" She teases, only to be slapped across her perfect face by Two-Face.

"That's for stealing from us. No one steals from us!" Two-Face says angrily.

"Uh. I'm sorry. I've been a bad kitty. Untie me..and I'll make it up to you." Catwoman seductively offers.

"Let's see if the coin thinks you're telling the truth." Two-Face says as he flips his trademark coin and slaps it onto the back of his scarred hand, revealing it came up heads, meaning that she gets to live a bit longer. "This court is now in session."

-Viewing Platform-

"We have to help her...!" Hulk says in a hushed tone.

"A forward assault will get her killed." Batman warns.

"Grr...if Wolverine was here, he'd just cut all those idiots down in seconds, Bat."

No, Hulk. We're heroes. Heroes don't kill, no matter how simple it'd make things." Batman says sternly. "Wait here. When I give the word, smash through the glass and do your thing. And no killing." Batman orders as he heads up, getting a nod from Hulk, who stays low as he observes the action. Batman takes out a sniper above and softly whispers to Hulk. "Now...!"

Hulk grins as he smashes through one of the windows, roaring loudly, startling the henchmen as Batman drops down to join in on the fun.

"Well! If it isn't Batman and his pet!" Two-Face exclaims as his men are easily bested by the two veteran heroes. Suddenly, Two-Face shoots Batman, knocking him over as he marches to Catwoman, pointing his gun at her. "Heads or tails, kitty cat?" He mocks.

"Which one lets me out of here alive?" Catwoman asks as Two-Face flips his coin again, this time coming up tails.

"Not this one. Time to die!"

"I vote for a stay of execution." Catwoman retorts as she uses her claws to cut free and slash the good side of Two-Face's face, making him tumble off of the platform and onto the courtroom floor.

"No gun, Harv? Shame. This is gonna hurt!" She says as she gets her claws out.

"Two guns, bitch!" Two-Face retorts, pulling a spare gun and aiming it at her, only for Hulk to wrap his hand around Harvey's face, making him miss his shot as he feebly clutches Hulk's fingers.

"Nice timing, big guy..." Catwoman seductively replies to Hulk's timely rescue.

"Like I'd let you have all the fun..." Hulk says back with a smile.

"We figured you could use our help, Selina." Batman says as he stands up.

"Hehe. You're right. I think I chipped a nail." Catwoman jokes.

"Funny." Batman says as Catwoman jumps down.

"So what do you need, Mr. Detective? And Mr. Hulk?" She asks as she struts past the two.

"Protocol 10. What do you know, Selina?" Batman asks.

"Never heard of it." She replies with a shrug.

"That's not what we need to hear. What about Strange?" Batman asks.

"I don't trust him. He's been missing for years, comes back, and is suddenly in charge of running Arkham City. Rumor is...he's been working with Joker, planning something very special just for the two of you. Maybe that's 'Protocol 10'?" Catwoman says, unaware that a sniper had his cross hair aimed right at Catwoman.

"Twinkle, twinkle, little bat, watch me kill your favorite cat!" A familiar voice says with a joyful giggle.

"...The ex-District Attorney here said something about-" Catwoman began to say before Hulk pulls her out of the sniper's line of sight, with her landing on top of him. "What the hell?" She exclaims as the laser pointer disappears. "This place is dangerous. I like it. You expecting a kiss, green?" She asks playfully, to which Hulk blushes.

"M-Maybe..." Hulk replies as Catwoman gets off of him, giggling slightly.

"That was Joker. You're not safe here, Selina. No one is." Batman says.

"Nine lives, remember?" Catwoman teases as she leaves the room.

"I need to locate where the bullet entered the court and where it impacted." Batman says to himself as he looks at the bullet hole in the window before seeing an impact crater on the floor, quickly using his detective vision to triangulate the angle the bullet was fired, as well as where it could've been fired from. "The trajectory the bullet travelled will lead us to the shooter." Batman says as the two head to the most likely place the bullet was fired from: The Gotham Cathedral.