The day was bright, and New York City was much quieter than usual. No more did the city reek of mutants roaming the streets and constant fighting. The Teenage Mutant Ninja Turtles, now being 21 years old, had significantly grown. The past 5 years indeed were a time of major change, but this was far from the end. Many new challenges lay ahead in life, but only time would tell what exactly they were.

The Turtles and their friends were up to life as usual, having defeated practically all of their enemies and no longer being burdened by the responsibility to save the city. Neverthless, they still trained in the ways of their now deceased Master Splinter, for the training of the Ninja does not stop during times of peace.

"Ok Raph, now show me what you've learned about the importance of speed and agility" Leonardo said, being the sensei of the team. "Michelangelo's your target".

"Whatever you say, Fearless Sensei." Raphael said with a grin on his face as he got ready to his face off against his younger brother.

"You ain't no match for Mikey's super speedy ninja reflexes brah!" Michelangelo said as he constantly was manuvering around the dojo in an effort to confuse Raphael and dogdge any of his potential attacks. Being the smallest of the group, Michelangelo was indeed the most agile of the group, but he was overconfident about it. Would his attitude be his undoing?

Raphael focused carefully on his younger brother's movements, remaining motionless and conserving his energy for the moment he would strike. And just when the moment was most opportune.

"Ow! Ow! Ow! Let me go!"

Michelangelo was already in his older brother's grip, having been surprised at just how much Raphael was able to maintain himself and not lose his temper. Without the inhibition of anger, Raphael 's movements were more focused, and being the strongest of the group, that focus was put to good use. It was over, Michelangelo had no way out over his older brother's powerful grip and attempts to break free only resulted in fatigue.

"Nice try little brother, but getting on my nerves ain't gonna work any longer" Raphael said with a smirk on his face as he loosened his group around the exhausted Michelangelo.

"Good work Raph." Leonardo said with a smile on his face, feeling proud of how far his brother had come over the years.

"Guess its time for a slice then." Raphael said as he fully let go of Michelangelo and headed towards the refrigerator. As he opened it however, it turned out to be completely empty, not even a box remained and Raphael instantly knew who was responsible.

"MIKEY!" Raph roared at the top of his lungs as his face grew red and his younger brother made a daring run for it.

"Guess some things never change" Leonardo said with another warm smile on his face as he observed his younger brothers in a high goose chase around their home lair in the sewers. Being a sensei was no easy task, but it meant that Leonardo had a responsibility over his brothers that wasn't comparable to even being just the leader of the team like in the past.

Suddenly, Leonardo looked over to the sewer's entrance to see two nicely dressed men looking at him. This was no cause for concern however, as Leonardo knew both Jack Kurtzman and Bishop well enough to trust men.

"Good to see you Leonardo" Jack Kurtzman said as the turtle and the man shook hands, followed by Leonardo shaking hands with Bishop.

"Good to see you both. Whats up?" Leonardo asked.

"We have some interesting leads on the Kraang, and thought your assistance would be valuable." Bishop said as he stood with both hands behind his back. "Ever since you and your brothers helped to Banish the Kraang back into Dimension X, their power has slowly but sorely waned. The combined resistance they encountered in the form of the Triceratons, the Salamandrians, the Utroms and many other alien races, have practically destroyed their presence in Dimension X. However, there is evidence to support that they still have one last stronghold on Earth."

"So, the Kraang aren't quite finished yet?" Leonardo said in response, while gently sharpening his Katana.

"The Earth Protection Force has been searching for years, but to no success. That's why I came to request the help of you and your brothers."

"Bishop, you've helped us immensely since the moment we met you." Leonardo said. "We would be in the wrong not to return the favour after all you've done for us."

"Very well. Me and Kurtzman will be in the laboratory with Donatello." Bishop said, before shaking Leonardo's hand one more time and then making his way.

Afterwards, Leonardo continued to sit in the dojo, sharpening his Katanas while looking up to gaze at at a picture of Master Splinter every now and then. It made him think, of all the times that had gone past, from the time that he and his brothers were mutated in an isolated battle between Hamato Yoshi and a couple of Kraang droids, all the way up to recent times where life mostly consisted of Ninja training, eating pizza and occasional patrols of the city.

"Greetings Donatello" Bishop said as he and Jack Kurtzman entered the laboratory.

Donatello smiled as he got up from his seat and greeted the two men, followed by a conversation about the Kraang, just like with Leonardo. It wasn't long before Raphael and Michelangelo entered the room as well, being eager to meet Bishop and Kurtzman after their little brotherly feud had run its course.

"So, Bishop, what was it like working Kraang Subprime back then anyway?" Michelangelo asked, wanting to know more about the life of the Utrom. "Was he a completely different dude back then?"

"No Michelangelo. Subprime may have once been a part of the Utroms, but darkness always resided in his heart." Bishop said. "The Utroms may be a race of peace and prosperity now, but it wasn't always that way. It took many millions of years of warfare and death to get where we are, and Subprime grew disillusioned with our way of life, thinking we had grown weak and cowardly in comparison to the violent past which was glorified in his eyes. The rise of Kraang Prime was the perfect opportunity for my brother to find purpose."

"Wow, who would've known that the problems today go back so many years." Raphael said.

"Indeed, and that's why the sooner we get rid of the Kraang, the better." Kurtzman said.

"Well, I have been experimenting with Mutagen recently, trying to recreate the original formula that Kraang Prime used to brainwash his subjects, only in reverse." Donatello added.

"Interesting. Lets work on that for the time being, for it might be the missing link in helping us defeat the Kraang." Bishop said as he slowly paced around the Laboratory.

"Hey Guys." Leonardo said as he entered the room.

"What up, bro?" Raphael asked him in return.

"I heard Karai was hanging out with April and Casey today. I thought I'd pay them a short visit." Leonardo said.

"Don't you mean pay her a short visit?" Michelangelo immediately said with a cheeky look on his face.

"Stop it, Mikey!" Leonardo said, trying to sound serious and hide his blush, but to no avail. "If you need me, just give me a call, you know where I'll be."

"Sure thing Leo." All three of the turtles said together.

Leonardo then proceeded to leave the lair, while all three of the other turtles continued to work with Bishop and Kurtzman.