The Kraang ship opened fire. A pink electric bolt of energy pierced through the Shellraiser as easily as a knife cutting into butter.

Everything inside the van shook. Sparks bounced off the walls, stinging and shocking the Turtles as they tried to figure out a way to escape.

“Any ideas, guys?” Leo yelled over the deafening sound of the Kraang laser.

“Just one,” Raph replied, angrily gnashing his teeth. He stalked over to Mikey’s station and punched him repeatedly for getting them into this mess.

More pieces of the van began to smolder under the terrible beam from the laser.

As the Shellraiser sizzled, another strange vehicle sliced through the sky, hopping rooftop to rooftop. It was a sleek custom motorbike: the Dragon Chopper!

And Karai was in the driver’s seat.

She drove her bike off the edge of the building, then leaped from it, somersaulting through the air.

The bike crashed to the sidewalk as Karai unsheathed her ninja blade. She landed on the ship and stabbed it in one graceful, fluid move.

The Kraang ship started to malfunction. Inside the cockpit, the alien pilots exclaimed in garbled Kraang speak, “This is that which is known as not good.”

The ship stopped firing on the Turtles and suddenly shot upward, weaving this way and that through the sky.

Inside the van, the Turtles were shocked by what they’d just seen.

“That was Karai!” Leo said, reversing the Shellraiser. “We’ve got to go back and help her!”

He floored the van, now in hot pursuit of the Kraang ship.

And Karai.

Raph ran over to Leo, trying to talk some sense into him. “She can take care of herself. Let’s put some distance between that thing and us!”

“No!” Leo shouted. He was determined, keeping his eyes on the ship and ignoring the flashing warning lights on the Shellraiser’s control console.

“But the Shellraiser can’t take another attack right now!” Donnie cried from the main control panel.

“Then I’ll do it myself!” Leo announced furiously. He unbuckled his seat belt and switched places with Raph. “Drive!” he ordered.

Leo climbed to the back of the van. “I’ll meet you back underground,” he instructed, opening a secret hatch. Inside was a sleek, one-person motorcycle known as the Stealth Bike.

“Hey, the Stealth Bike’s my thing,” Raph moaned.

Leo was not in the mood. He mounted the Stealth Bike and glowered at Raph. “Well, now your thing is sucking it up,” he said.

“Hey … that’s my thing!” Donnie protested.

Leo shut the hatch and left them behind.

The Shellraiser’s front fender opened up, and Leo rolled out on the Stealth Bike.

He was a Turtle on a mission.