Song: Lyra - Breaking Benjamin

"Whoa, what's that? It's so shiny!"

"That's a window, Mikey." The purple-clad turtle, Donatello, doesn't even spare our youngest brother a glance. He's too busy fiddling with his T-Phone as he attaches it to the window lock. His russet eyes are practically glued to the electronic screen.

Michelangelo, the orange-clad turtle, seems to understand. "Oh. Well, it's a nice window! Wait, why are we looking at it?"

"We're going through it," Donatello mutters through gritted teeth.

Michelangelo nods sophisticatedly. "Oh, right. Can't we just walk through the front door? I'm tired of hanging by my grappling hook."

"And risk blowing our cover and getting killed? Sure, Mikey. Let's do that."

"I feel like that was sarcasm."

"It was."

"There's no need to be so-"

A smacking sound interrupts Michelangelo and Donatello's argument. I glance over to see Raphael glaring daggers at our youngest brother. His brilliant green eyes show passed his red mask and light up the darkness. He may be short in stature, but he makes up for it with his sharp temper.

"Shut up, Mikey, before I use you to get through the window instead," Raphael snaps.

"Actually, that would get us caught just as easily," Donatello says matter-of-factly. "If we break the glass, the alarm inside will sound and sic hundreds of Kraangdroids on us."

Raphael turns his hard, green stare on Donatello. He does not like being corrected. "Then you better hurry up with that decoding app."

"I'm trying," the turtle with the purple bandana replies. His gaze is locked on the shell shape in his hand. "The sequence is just so complex that my T-Phone is taking longer than usual."

"Maybe it will work faster if you hit it on the wall a couple of times!" Michelangelo suggests.

Donatello's eyes rip from his phone and dart over to Michelangelo. "Is that why I have to keep repairing your T-Phone?!"

Michelangelo's face lights up with slight panic. "Well, um, yeah. But I only do that because my games keep stalling!"

A click sounds from Donatello's T-Phone, indicating the window lock is open, but he's too angry to notice.

"I spent weeks working on these things, Mikey! What were you thinking?!"

"I was thinking that it would make my game move faster," Michelangelo answers and puts a hand on his side. "Duh."

Donatello's eyes blaze with fire. "You can't just-"

I push my way between their disagreement. "Guys, can we focus on the problem at hand?"

"I don't know, Leo. I'm kind of enjoying this." Raphael comments with a smug look on his face. He looks more content than he's been since we left the lair.

I impatiently let out a puff of air. "Do you guys even remember why we're here?" When no one answers, I go on: "Donnie, your mutagen tracker led us here, which means they have some hidden inside. We need to retrieve it before the Kraang does something destructive with it. Now, we are hanging off the side of a building in perfect view of the Kraang. The window is open. Let's get inside, get the mutagen they're holding, and get out. Then you can argue all you want." I finish my speech with a look that dares one of my brothers to argue.

Donatello gives Michelangelo another vexed look. Then he retires from the problem and pushes the window open. He inserts his head through the opening and looks back at us.

"We're in. The room is dark, but I don't see any Kraang," Donatello announces.

"Fall in, team. Quietly," I add with a pointed glance at Michelangelo.

Donatello grabs onto the edge of the window and releases his grappling hook from the roof of the building. He leaps inside and lands softly on a tiled floor about three feet below. The rest of us follow him in just as delicately.

The room is dark. The lack of light seems to engulf the atmosphere and make the very air itself impossible to see through. I can barely manage to see past my fingertips, so my brothers and I have to be extra careful.

Donatello finally finds a computer and immediately starts to hack into it. My other brothers and I survey the rest of the quarters. We search every crease and corner for anything that can get us caught. Luckily, there is nothing.

About that time, the purple-clad turtle seems to find what he is looking for. "The mutagen is in the basement. But there are Kraangdroids charging on the floor above, so we have to be careful."

"I'll take 'em out," Raphael volunteers as he whips out his sais.

"There are too many," Donatello replies. "Besides, we should do the best we can to complete the mission without a fight. We don't want to attract unwanted attention."

Raphael snorts irritably. "Where's the fun in that?"

"Are there any elevators we can use?" I interrupt.

Donatello's eyes search the computer screen before answering. "There's one right outside this room, but there's no guarantee that we won't have a surprise waiting for us on the other side of it. We should take the stairs instead; the Kraang are less likely to use them since lengthy walking distances can lock up their servos."

I nod and look at Michelangelo. He hasn't said anything in a while. "You ready?" I ask him.

"I don't know, dudes," Michelangelo says skeptically. "I have a bad feeling in the pit of my stomach. And not just because I had eight slices of pizza before we got here!"

"He's an idiot," Raphael growls. "Let's go."

My team and I release our weapons from our sashes and head out. We make our way down the stairs unharmed. We stop in front of a door at the bottom of the stairwell. It's labeled "B".

"This is it," Donatello says. "Now, remember: we need to be very quiet. Any loud noises could alert the charging Kraangdroids above-"

"BOOYAKASHA!" Michelangelo shouts as he rams into the door. He disappears on the other side, leaving us behind.

Donatello face-palms and I cringed, but no footsteps sound from the floor above us. The Kraangdroids must not have heard.

"Follow him!" I order. The remaining three of us head in after Michelangelo.

The lights are blinding. I have to squint while my eyes adjust. I notice more tiled flooring, much like the type in the first room. The walls are an unappealing light gray color. The ceiling is twice as high as a regular room. Complex machines line the wall on the right, and right smack in the middle is a huge globe partially filled with mutagen.

I hear something that sounds like metal hitting the tiled floor. I look over to see Michelangelo wrestling with a robot covered in black with big, silver eyes. It's a Footbot.

"Footbots?!" Donatello exclaims in horror. "What are they doing here? This is a Kraang facility!"

Michelangelo hooks his nun chuck's short chain around the Footbot's neck and snaps it. He flips off of the 'bot and starts to twirl his weapon around. "Dunno!" he replies as he goes after another.

"Finally," Raphael growls in approval as he jumps into the battle. "Some action!"

I use one of my katanas to slice two Footbots in half while tripping a third 'bot with my other katana. Two more Footbots run at me from either side. I jump into the air, flip, and jab my swords into them as I come back down. I land on my feet and spin around to survey the rest of the fight.

Raphael is just finishing his last Footbot. Michelangelo has already taken down all the 'bots surrounding him. He is running to Donatello's aid, who I realize is trying to hack one of the machines. I follow suit and cut through two of my brother's attackers. Michelangelo takes down the other one with rapid footwork.

"Yeah, boy!" Michelangelo says happily, swinging a nunchuck around. "That was nothing. You'd think they would have been harder to beat since they've got a boatload of mutagen here."

Raphael walks up beside me. "Footbots are never hard to beat," he sniffs proudly.

"No, Mikey's got a point," Donatello comments as his fingers work the keyboard in front of him. "Normally, the mutagen would have been heavily guarded. But that was far too easy. Besides, what are Footbots doing here, anyway? They're under Shredder's command, not the Kraang."

"Unless Shredder is involved in this," I murmur thoughtfully.

"That doesn't make any sense," Raphael retorts. "If Shredder is involved, then he wouldn't leave something so important practically unguarded. Let's face it; we've just gotten better at this ninja thing," he adds, lifting his head up smugly.

I consider Donatello's words for a moment. "He wouldn't think it mattered unless he had something more important to protect."

Donatello's brown gaze meets mine. "You don't think there's something more dangerous than mutagen in this building, do you?"

"That's exactly what I think," I confirm. "And it must be pretty big if the Shredder needs help from the Kraang."

Raphael shakes his head. "Whatever. Even if there is something else here, how will we find it? This is the last floor in the building."

"Donnie, can you check the floorplan and see if anything strange pops up?" I ask the techy-turtle.

"Already did," Donatello answers promptly. "Nothing else is showing up. They must have decided to leave it out of the system."

Again, Donatello and I both exchange glances. If Shredder's plan isn't marked in the systems, either the Kraang don't know about it or it's so dangerous that the Foot Clan and the Kraang want to keep it classified for their own use. No matter what, though, one thing is for sure: it must be really, really bad.

Raphael's voice breaks me from my thoughts. "Any turtle know where the little joker went?"

Alarmed, I look around the room. Michelangelo is nowhere to be seen. That's not good. "Raph, go search the stairwell. Donnie, come with-" I don't even get a chance to issue search parties before I hear Michelangelo's voice.

"Hey, guys! Look what I found!" It sounds like he's... Underground?

Just then, Michelangelo pokes his head out of the floor a few meters away. "There's another door down here. You think it's where the Kraang stash virtual pizza?" A dreamy look passes the orange-clad turtle's face. "I wonder what that would taste like."

"Move, shell-brain!" Raphael snaps as he shoves Michelangelo's head back into the floor. He leads the way as Donatello and I follow him down a ladder.

Michelangelo is right; there's a door at the bottom of the ladder. I just wish he had mentioned that four mutant turtles can't fit in front of it at once.

"Donnie, your elbow is in my shell."

"Get your butt away from me, Mikey!"

"I would appreciate it if you got your katana away from my eye."

"Dudes, my nunchucks are not in a good place right now!"

The bickering goes on until the pressure applied to the door is just too much. It breaks down and all four of us tumbled into another room. As I land on my stomach, something that sounds suspiciously familiar meets my eardrums.

"Well, well, well. Look who finally found my secret laboratory."

It's Baxter Stockman.