From the outside, the Kraang’s facility looked like any other industrial building after midnight. There were no lights on and no signs of life—absolutely nothing to attract the attention of any suspicious earthling who might wander by.

The Turtles found a small door in the roof of the building. As Donnie tinkered with the lock, everyone else focused on April. No one said it, but they were all thinking the same thing: There was no way of knowing what condition her father would be in after weeks of being held prisoner by an alien race. He could be badly injured, brainwashed, or worse. The Turtles knew they would have to bring their ninja A-game if they were going to rescue him.

The hatch lock opened with a clank. “Piece of cake,” Donnie said confidently.

“Let’s do this!” April said, pushing her way to the front.

“We need you to wait here, April,” Leo reminded her, blocking her way.

“Are you crazy?” she protested. “My dad’s in there!”

“Along with who knows how many Kraang! Leave it to the pros.”

April felt defeated. Being excluded from her father’s rescue was not an option. She gave Leo a hard stare and tried to plead her case.

“I can’t just do nothing,” she said.

“You won’t be doing nothing,” he informed her, handing her a rope in the darkness. “We need you to lower this rope when we give you the signal.”

It was clear Leo wouldn’t change his mind. With a sigh, April took the rope and watched the Turtles disappear down the hatch.

The inside of the Kraang’s facility resembled a space station. The titanium walls hummed with bright-pink energy as Kraang computers processed information at lightning speed. There were mutagen labs, mutant testing areas, prison cells, power cores, and command centers—all under one roof.

The Kraang-droids—the shiny exoskeletons that housed the slimy Kraang brainlike things—patrolled the corridors with military precision, blasters charged up and ready to fire.

The Turtles began to stealthily drop in, one by one: first Leo, then Donnie; then Raph; and then Mikey landed with a loud thud!

A droid spun around, putting Mikey in its sights. With no time to react, Mikey could only cover his face and wince, afraid of what would come next. The barrel of the droid’s blaster illuminated, readying a bolt. But at the last moment, Raph sprang into action, burying his sai into its robotic head. The Kraang-droid seized up, and then its body exploded in a mess of metal and sparks.

That was close, Mikey thought. Opening his eyes, he smiled at Raph.

But instead of smiling back, Raph bopped him hard on the head—a painful reminder to be more careful next time!

The Turtles moved through the lab in formation, watching each other’s shells. They knew they had to keep their eyes peeled for any sign of April’s dad. And they needed to get deeper inside the facility.

Up ahead, two droids were waiting by an air-locked door. Leo paused and motioned for his brothers to wait for the robots to gain access. One droid rapidly keyed in a code. Once the entrance opened, Leo rolled forward, sneaked up behind the droids, and bashed their heads together, knocking them out in one swift move!

A third Kraang-droid pulled his blaster and aimed at Leo. Raph dropped that bot by throwing a sai right between its eyes.

They were in!

But what they were in was anyone’s guess. It seemed like some sort of control room.

It made Mikey feel as though he were in a sci-fi movie—especially with the real-life alien just a few feet away.

They all took a closer look at the Kraang housed in the bot. It was a gelatinous, brainlike creature that appeared dazed and confused. But after a moment, its tentacles began to move, and the Kraang roared back to life!

Without hesitation, Leo stepped up and punched the alien’s lights out for good. It was one KO’d Kraang!

The Turtles exchanged looks. They were pleased they’d made it this far, but now it was time to find April’s dad—and to find out what the Kraang were up to.

Leo gave the others their orders. “Donnie, hack into the system and see what you can find out about the Kraang’s plot.”

Donnie nodded, his hands itching to touch the keys in front of him.

“Raph,” Leo continued, “you’re with me.”

He then locked eyes with Mikey—who waited with a big, goofy smile.

“Mikey . . . stay with Donnie,” he said.

“Why do I always get stuck with Mikey?” Donnie asked.

“I don’t want him, and I’m in charge,” Leo said matter-of-factly.

“Hey!” Mikey shouted in frustration.

Completely ignoring Mikey, Donnie suggested, “Well, then make Raph take Mikey!”

“Over my dead body!” Raph piped up.

“Hey! You know, I’m starting to think nobody wants to be with me,” Mikey said, his feelings hurt. “I’ll just go off on my own.”

Mikey threw a smoke bomb and—poof!—seemed to disappear into thin air. But he didn’t manage to go far! A split second later, he came through a door on the other side of the control room.

“That was a closet,” he explained.

Leo and Raph were already out the door. “Have fun, you two!” Raph said, shutting the air lock.

Mikey looked around the alien control room like a kid in an arcade.

“What’s that button do?” Mikey asked, pointing excitedly.

Donnie smacked his hand away, gritting his teeth. “Don’t. Touch. Anything.”

Hacking an alien computer mainframe was hard enough, but babysitting Mikey at the same time? This was going to be a challenge.