The next day after school the girls, April and Casey go to the sewers to see the turtles again but before they go down they look around to see if anybody is watching and then they all went down to the lair. Once they got to the lair they look around the lair but couldn't find the turtles.

"Where are the guys?" Said Applejack.

"They're probably at the dojo." Said Casey.

So they went to the dojo to see the turtles training their power. Twilight is impressed about Leo's skills, Rarity was admired of Donnie's intelligences, Pinkie was amazed of Mikey's talent, and Sunset blush when she see's Raph's muscles. Then Splinter yelled YAME.

"Wow you guys are awesome." Said Rainbow.

"You guys saw us?" Said Leo.

"Yeah it's like Rainbow says your awesome." Said Pinkie.

So the group went outside the lair.

"So what are you guys doing here?" Asked Donnie.

"Well brought our instruments to play our music for you." Said Pinkie. The turtles though of it and say that they like to listen to their music. So the girls got their instruments and start playing.

Applejack: Once upon a time
You came into my world and made the stars align
Rarity: Now I can see the signs
You pick me up when I get down so I can shine
The Rainbooms: Shine like rainbows
Shine like rainbows
Shine like rainbows
Shine like rainbows

As the girls play they pony up and grow Pony tails and Ears. Except Twilight, Fluttershy, and Rainbow grow wings and the turtles were shocked and amazed of how they look.

Rainbow Dash: Friends, you are in my life
And you can count on me to be there by your side
Sunset Shimmer: And when the music comes alive
We sing our songs to lift us up so we can shine
The Rainbooms: And the sound that we hear in our hearts
Makes a crescendo
And the light that ignites in the dark
It makes us all glow
And shine like rainbows
We shine like rainbows
Shine like rainbows
We shine like rainbows
Together we stand
As the rain begins to fall
And holdin' our heads up high
As the sun shines through it all
And the sound that we hear in our hearts
Makes a crescendo
And the light that ignites in the dark
It makes us all glow
And shine like rainbows
We shine like rainbows
Shine like rainbows
We shine like rainbows
We shine like rainbows

After the girls were done playing they transform back to normal.

"So guys what do you think?" Asked Sunset.

"Sunset you. . . you were. . ." Said Raph as he try to figure out the right words to say.

"That was awesome!" Said Mikey as he looked at Pinkie." And pinkie you were really great with those drums.

"Aw, thanks Mikey." Said Pinkie as she blush.

"Oh yeah that was the word I was looking for, you were awesome Sunset." Said Raph.

"Aw thanks Raph." Said Sunset.

"Wow you girls were amazing and Rarity you look so beautiful in that pony form." Said Donnie.

"Aw, why thank you darling that very kind of you to say." Said Rarity.

"Wow Twilight that was an amazing song plus you have a beautiful voice." Said Leo.

"Aw thanks Leo." Said Twilight.

The the turtles asked the girls how they pony up and Sunset told her that she was the one that made it happen. So Sunset began to tell the turtles, April, and Casey that she was from another world called Equestria and in that world live earth ponies, pegasus, and unicorns in harmony and have magic their but she didn't tell them about her dark past.

"Wow this world you came is so-." Said Donnie.

"Magical?" Said Sunset.

"Yeah that was the word I'm looking for." Said Donnie." Wow Princess Celestia is really a good teacher.

"She is I just wish that I the opportunity to still be her student." Said Sunset a little sad.

"What do you mean Sunset?" Asked Raph very curious.

"Oh it's nothing Raph really you don't want to know." Said Sunset.

"Oh okay." Said Raph and he thought about something.' She's hiding something but maybe I shouldn't push her and leave it alone for now.'

Then Karai came and the turtles asked her what's wrong.

"Karai what is it, what's wrong?" Asked Leo.

"Leo we got trouble last night I saw Tigerclaw meeting three girls and they join the Shredder to help him get rid of you guys." Said Karai and the girls were a little nervous when Karai mention 3 girls.

"Um those three wouldn't happen to be name Adagio, Aria, and Sonata?" Asked Sunset.

"Yeah how did you know?" Asked Karai and the turtles, April, and Casey look at the girls curious.

"Well you see they happen to be our enemies from our past." Said Pinkie.

"What?" Said the turtles, Karai, April, and Casey.

"Yeah you see the my are sirens but they are different sirens." Said Rarity. The girls told the them that the Dazzlings were from Equestria but was banished to this world and they had to beat them at the battle of the bands after they tried to force the students at Canterlot High School to do their bitting.

"Wow dudes that's really hardcore." Said Mikey.

"Yeah, but now the Dazzlings are now teaming up with the shredder and not even a counter spell will stop them, so what do we do?" Said Applejack.

Then Splinter came and may have an idea.

"Maybe we can train you to kunoichi's. Said Splinter and that got the turtles, April, and Casey shock.

"What's a kunoichi?" Asked Pinkie.

"It's a female ninja like me and April." Said Karai." Father are you sure that's a good idea?"

"If it's okay for the girls." Said Splinter.

"A chance to become a ninja, awesome I'm in!" Said Rainbow Dash.

"I'm in too." Said Applejack.

"Me too I like to be a ninja." Said Pinkie.

"Well fighting is really not my style but I think I'll give it a try." Said Rarity.

"Well I don't like fighting but I guess I can try." Said Fluttershy.

"If the Dazzlings are joining the Shredder then I guess we're going to need some training. Count me in." Said Sunset.

Then all eyes look at Twilight.

"Well Twilight?" Asked Rainbow Dash.

"Huh, I don't know I'm not really a good fighter." Said Twilight.

"It's okay Twilight, will help you." Said Karai.

"Okay then I'll do it." Said Twilight.

So Splinter told the girls to meet him at the dojo. And so their training begins.