Donnie's POV:

I frowned as I worked on my new invention. Something in the circuity wasn't right...I grabbed my electrical laser pen and started making adjustments.

"Whatcha doing, Donnie?"

I jumped, making the laser hit my hand. "Ow! Ah, sewer apples..." I turned around to see Mikey looking at me curiously. "Mikey, you made me screw up the wiring!"

Mikey smirked. "Made you? I don't see my hands around yours, do you?" He asked cockily.

I growled. "Why, I oughta-" Suddenly, I was cut off by a buzzing sound coming from inside my invention.

Mikey looked over my shoulder. "Dude, is the metal box supposed to glow?"

"Glow?!" I whirled around. Sure enough, the machine was glowing bright white. "That's not supposed to happen...DUCK FOR COVER!"

The two of us quickly dove underneath my worktable, using boxes I'd stored there full of spare parts to shield us. Good thing, too, because when my device exploded, it sent shrapnel everywhere. We coughed from the smoke now clouding my lab, and got out from underneath the table.

Raph, Leo, Master Splinter, and April came rushing in, all asking what happened.

"Donnie, what'd you blow up this time?!"

"What happened?!"

"Donatello, Michelangelo, what is going on here?"

"Guys? You alright?"

I nodded. "Yeah...we're fine...nothing but a bit of'-" I coughed a bit. "-smoke."

As the smoke started to clear, I could make out a figure standing in the midst of it. My eyes narrowed, and I drew my bo staff, taking out the naginata. Mikey similarly pulled out his nunchucks, Raph his sais, Leo his katanas, April her tessen, and Master Splinter his jade staff.

The figure coughed a lot before managing to gasp out. "Whoa...that...was unexpected..." He broke into another coughing fit.

My eyes widened as I heard the voice. "No...it can't be..."

The smoke cleared, save a few hazy wisps, revealing a tall turtle. He had olive green skin, red eyes, and a tan plastron, a huge chunk of which was replaced with metal. He wore no athletic tape, toeless boots, a purple cape, and an electronic visor that was above his eyes like a pair of sunglasses. And around his eyes-

-was a purple bandanna.

He coughed again, and I saw his gap tooth.

My gap tooth.

I took a hesitant step forward. "D-Donatello...?"

His head snapped up, his eyes locking with mine, both of us shocked at what we saw.
_

Future Donnie's POV:

"D-Donatello...?"

I jerked upward at that voice, ony to be faced with myself. My 30-years-younger self. I stood there, momentarily shocked. "H-how...?"

Young Mikey chuckled. "Dudes, you should so see your faces right now. That. Is. Priceless!"

I blinked. "Mikey? That's you?!"

Mikey nodded. "Sure is! Now, who're you and why're you dressed like Donnie-boy?"

"Hey!" My younger self snapped.

I put a hand to my forehead. "I don't know how I ended up in the past...but I'm Donatello."

Raph rolled his eyes. His two eyes. "Yeah, right. You're so smart, what's your full name? Huh?"

I smirked. "Donatello di Niccolo di Betto Bardi Hamato. That enough for you, Raphie?" I remembered him always hating that name.

He growled almost ferally, sounding enraged.

Leo looked at me. "Wait so there's Donnie and...Donnie? And what happened to your plastron?"

"Mine explosion." I said. "The Kraang are idiots. They step on their own mines all the time. I happened to be on a recon mission." I paused, and held up two of my fingers. "Leo...how many fingers am I holding up?"

"Uh...two. Why?"

I sighed in relief. "Good. You're fine."

"Explain your presence here, Donatello."

I jumped. "Master...Splinter?!" I turned to see Splinter standing there. Master Splinter. Sensei. Hamato Yoshi. Without a second's thought, I ran up and hugged him, tears forming in my eyes. "Sensei...Father...you're alive...!"

He was a bit shocked at my reaction to him, but e still hugged me back. "Yes...I take it that where you're from, there are several changes, am I correct?"

I let him go, and nodded. "Lots...and you wouldn't believe all the stuff that's happened to me."
_

Donnie's POV:

I couldn't believe it! Me! 46! In the lair!

While I spazzed out excitedly, April walked up to him. "So...you're Donnie in the future?

Future me nodded, and smiled, surprisingly without being nervous or acting funny. "That's right, sweetheart."

Sweetheart?! Did I hear him correctly?! Maybe he's just being endearing to her...because she's a kid...yeah, that's gotta be it...

Future me looked at me. "Donnie, I need to talk to you. Alone."

Splinter, April, and Leo immediately left, but Raph and Mikey stayed behind. I frowned. "Mikey, if you don't get out, no pizza for a week!"

Mikey's eyes widened. "I'm going! I'm going!"

I turned to Raph, who smirked. "You ain't getting rid of me so-"

"Raph! There's a cockroach on your shell!" My older self exclaimed in mock-horror.

My brother's eyes went wide, and he started trying to reach his shell. "Get it off me! GET IT OFF ME!"

"Maybe Leo could help you..."

"LEO GET YOUR SHELL OVER HERE!" Raph yelled, running out of the room panicked. My older self went and calmly locked the door behind him-

-and we both burst out laughing.

"HAH!" Older me managed to get out. "He STILL gets scared of 'em! That's just TOO FUNNY!"

Once we'd both calmed down, I looked at him curiously. "So...Donnie...you wanted to talk to me?"

He immediately went serious. "Yeah. There are some important things you need to know." He sat down on the floor, gesturing me to follow. As I did, he sighed.

"Donatello...I need to tell you about the future."