NOTE: There will probably be granmar mistakes that I will fix later.

Four years later...

"Hold still, blast you!"

On the streets of New York, Baxter Stockman fired the cannons of his new exo suit at Mikey and Raph, who narrowly avoided the bullets with their ninja speed. The crazed scientist had gone back to his crooked ways shortly after the Turtles reversed his mutation, and he even built his own army of super fly-droids that could bite a limb off with their massive jaws. Though Stockman was really annoying, he at least kept the Hamato brothers out of boredom.

As for our reptilian heroes, they were no longer teenagers and within a few months, they would all turn twenty-one. They still lived together in the sewers and continued to fight crime in the shadows, but their lives were about to be changed forever...

"Hey, Raph!" Mikey shouted as he jumped onto the roof of a car. "When are you gonna ask Mona to marry you?"

"Are we really gonna discuss this now?!" Raph threw his sai at Stockman, but fly-droid swooped in and caught it with its jaws. The hotheaded cursed as the robot flew off with his weapon.

"Well, it's been four years!" Mikey continued. He quickly jumped off the car just as Stockman brought his mechanical fist down to crush him. "And we're not getting any younger!"

"I'll ask her when I'm ready to ask her!" Raph charged at Stockman from behind and raised his remaining sai to attack.

But another fly-droid suddenly barreled into him and knocked him to the ground. It landed on top of him and prepared to bite his face off with its deadly jaws. Thankfully Raph was much quicker and stabbed right through the droid's head.

Meanwhile, Leo and Donnie were dealing with the army of fly-droids a block away. The former fought them off with his sword while the latter fiddled with a small device in his hands.

"How much longer, Donnie?!" Leo yelled as he sliced through another droid.

"Just a few more seconds!" Donnie replied as he punched in the last few digits.

Planted throughout the entire borough were EMP bombs of Donnie's own design. The electromagnetic pulse would cause a temporary blackout, but it would also permanently disable Stockman's droids. As Donnie predicted, the moment the bombs released the radiation, the lights in every building went off and the fly-droids fell to the ground.

Mikey cheered as the fly-droids dropped like...well...flies all around him. "Whoo-hoo! We did it!"

"You haven't won yet!" Stockman activated another gun which shot out a sticky red slime. He was able to hit Mikey and the Turtle squeaked as he became stuck to the side of a building.

"Mikey!" Raph ran to help his brother, but then he was hit, too, and the gooey substance held him down.

They were both totally helpless and at the mercy of Stockman, who laughed maniacally.

"I anticipated that you would use an electromagnetic pulse against my droids," the scientist explained. "That's why I designed this suit with a special shielding that would protect me from it. EMP is useless against the Stockman-Pod!" He aimed his cannons at the two brothers and prepared to fire. "Nothing can harm me!"

"Except my blade!"

Stockman looked up to see Leo dropping from a building above him and raising his katana. He yelped and covered himself with his mechanical arms. But the Turtle managed to slice through both of them.

Leo then cut down both of the robot's legs, causing it to tumble over. Baxter quickly unbuckled himself and crawled out of his seat, but before he could get away, Leo brought his foot down on the human's back and pinned him to the pavement.

"You're not going anywhere," Leo said with a cocky grin.

Donnie caught up to his brothers and used a laser-pen to free Mikey and Raph from the sticky slime. "You guys okay?"

Raph groaned as he flicked a bit of slime off his arm. "Yeah, but I'm gonna need a bath."

Suddenly Donnie's T-phone began to ring. "Excuse me a sec," he mumbled as he took off his belt and read the caller ID. "It's April." He answered and put it to his ear as he walked away. "Hey, April. What's up?"

Raph picked up a ball of red slime and glared down at Stockman. "I say we take this goo and shove it up his-"

"No, Raph," Leo said calmly. "We're done here." He then dragged Stockman over a fire hydrant and handcuffed him to it. "We'll let the police take care of him."

"This isn't over, Turtles!" Stockman yelled angrily as he tugged at the cuffs. "I'll be back! And you will suffer my wrath!"

Mikey chuckled and shook his head. "When will you ever learn, dude? The bad guys never win."

"April!" Donnie suddenly sounded worried as he continued to talk to her, which prompted his brothers to look at him. "April, calm down! We'll...We'll figure this out, okay? We'll be there shortly."

"Donnie, what's going on?" Leo asked his brother after he hung up the phone.

Donnie looked at his brothers with a grim expression. "April's hysterical. She keeps saying that her Dad just...disappeared right in front of her."

"Wait, what do you mean he 'disappeared'?" Mikey asked.

"Well, the way she described it, it's like he suddenly turned to-" Donnie's eyes went big and he stopped talking. For a few seconds, he just stood there, staring at his brothers, then he dropped his phone.

"Donnie?" Leo walked up to him. "Are you all right?"

"I-I..." Donnie stuttered, his face pale and his eyes still big. "S-Something's not..."

"Donnie?" Leo gently touched his brother's shoulder...

...and Donnie's body suddenly turned to dust and was carried away by the wind.

The stunned brothers stood in silence for a moment, before Mikey spoke in a quivering voice, "W-Where did Donnie go?"

"Donnie?" Raph lifted his head to the sky and called out to his brother. "Donnie?! DONNIE! DONNIE, ANSWER ME!" He turned to Stockman and roughly grabbed him by the collar of his shirt, his emerald eyes ablaze with unspeakable rage. "Was this your doing?! TALK!"

Stockman trembled in the Turtle's grasp and frantically shook his head. "I-I-I didn't do anything! I swear! I-I-!" He suddenly gasped and went stiff, and just like Donnie, he turned to dust, leaving only the handcuffs that were still attached to the hydrant.

Raph backed away in fear and was starting to panic. "What's going on here?! First April's Dad, then Donnie, and now Stockman!"

"Is this...the end of the world?" Mikey whimpered.

"Alright, let's...let's just be calm," Leo said, though he was clearly as shaken up as the others.

"Calm down?!" Raph said incredulously. "Everyone is disappearing around us and you expect us to be calm?!"

"Raph, listen, panicking is not gonna..." He trailed off as he eyes widened. Bits of dust were starting to flake off his body.

"Oh, no," Raph whispered in despair. "No, no, no, no, no, no." He ran to his older brother and hugged him in a desperate attempt to keep him from disappearing. "Don't go," he softly pleaded, his voice shaking. "Don't go. Please don't. Stay with us. Please stay. Please, Brother. Don't..."

But Leo turned to dust in his arms and drifted away.

Raph slowly turned to his remaining brother, who had tears in his blue eyes and was shaking. "Mikey..." he whispered.

"Raph," Mikey gulped, "are we gonna die?"

The hotheaded Turtle shook his head, close to crying. "I don't know, Mikey."

Not knowing what was going to happen next, Mikey ran to Raph and hugged him, crying on his shoulder. "I don't wanna die, Raph."

Raph could only hold his little brother closer, waiting for the end.

So they stood there for the next five minutes, waiting and crying, but nothing happened. Then they heard a woman shouting down the street.

"Paulie! Paulie, where are you?!" A blonde woman in her mid-thirties had mascara running down her face from crying as she looked around frantically. "Come to Mommy, sweetie!"

A young Hispanic man came running out of his apartment and onto the street. "¿Dónde estás, mamá? ¡Respóndeme!"

Soon the streets were filled with scared and devasted people looking for their missing loved ones. No one seemed to notice the two mutant Turtles that stood in the midst of the crowd.

Mikey and Raph were both confused and terrified. Who could've done this?

...

On another planet, a large purple-skinned man with no hair and ridges on his chin walked out of his small hut to look at the beautiful countryside. This world was uninhabited and completely silent save for the faint rustling of the crops in the fields as they rubbed against each other.

But the rest of the universe was crying out in anguish and despair.

He looked at the sunset before him and smiled in satisfaction.

It was done.

Thank you all for your support and reviews for this story!

And as for that cliffhanger, yes, there will be a Ninja Turtles/Endgame crossover! It's title will be "Age Of Aquarius"!