*BOOOOOOOOOOOOOOM*... SHUT UP!

Day 10, Lunch Time, Ponyville

"Spike! What happened?"  Twilight saw the purple dragon lying there beside the crater.

"Ohhhh... my head," Twilight dragged Spike away from the crater.

The crater itself seemed very deep, with a small object at the center. The Object was a blue booth that had the words 'Police Box' on it, standing at a slant. the door opened as a frantic Doctor Hooves came out, coughing due to the resulting smoke, he started to climb up the crater.

"Fluttershy, can you help him up?" Fluttershy floated down and picked up the pegasus, placing him on the ice. The Doctor caught his breath.

"Now maybe you can tell us a bit about what happened..."

"*GASP*," the Doctor started to speak but no sound surfaced, then he coughed.

"Oh my Gosh that was horrible, I almost lost my voice there for a second," he took a few seconds to catch his breath then continued, "Am I still in Ponyville, oh thank goodness. Okay, Whew! Hooves? Intact. Mane? Frazzled but still noticable.Tail? *GASP* Where's my tail? WHERE IS MY TA- oh there it is," The Doctor started petting his tail like a pet. then stood up and started to explain his plight, "There's a disaster coming to Canterlot that both Princess Luna and Princess Celestia need every single pony's help, they've sent letters but they'll take too long, so I took the liberty of using the TARDIS to deliver the message faster, now where can I find a towel?" he started looking around frantically. The mane 6 gathererd together for a group meeting.

Meanwhile, Inside Sugar Cube Corner:

"It looks like I'm going to have to do this," I put on my sunglasses, "Pinkie Pie style..."

Back outside:

Spike belched out a letter from Princess Celestia, immediately Twilight opened the letter and read it out loud.

Dear Twilight Sparkle,

It is urgent that you and your friends arrive to Canterlot Immediately, there's no time to waste.

Princess Celestia

P.S.: Bring Aoi...

"He's RIGHT!" Twilight exclaims after finishing the letter.

"Of course I'm right!" The pegasus turns around to continue his search, "Nobody ever listens to a time lord..."

"C'mon everybody, we need to get to Canterlot as Soon as possible! Rarity, Help me cast the teleportation spell."

"Right!" The six crowd together in the area of effect for the teleportation spell.

"Everone, meet us in Canterlot by train, something tells me we're going to need the horsepower." Just then Twilight remembers the letter.

"Where's Aoi?" The spell goes into effect, and the 6 are gone in a flash. After their departure all the city guards and able bodied colts and stallions boarded the train for Canterlot, waiting for what fate would bring.

1:00 pm, Canterlot Royal Palace

"Did we make it?" Twilight and the gang rushed to the throne room to meet the Princesses.

"Twilight, you must hurry, help Shining Armor Create a barrier around the city."

"Princess Celestia, what's wrong?" She casts a spell on the mane 6 that seems to do nothing, except flatten Pinky's hair. The pink party pony frowns. The Sun Princess sighs a mix of relief and anguish. She goes toward the rear window and explains.

"The changelings have comeback to Canterlot..." 5 of the mane six gasp in surprise at the new developement, except for Pinkie Pie, trying desperately to reinflate her hair with a bicycle pump. Princess Luna continues to explain,

"It started this morning, a Pony reported her brother acting strange and called it into the Royal Guard's office, when they went to go talk to him, they revealed him as an Impostor. When Interrogated, he turned out to be a changeling, realizing he was caught, he kept his mouth sealed, only occasionally saying 'The Queen will rise again.' Afterwards the entire town has been on full alert, trying to find the changelings. We believe they are build forces by infiltrating Canterlot and impersonating various ponies, mainly those with strong relationships to feed and grow in power..."

"That's awful!"

"Where's Aoi?" Celestia seemed disgruntled by the lack of the wolf's presence.

"We couldn't find him in time, he's still in Ponyville."

"I'm sure he'll get here eventually, we'll need every ounce of help we can get. My guess is that Queen Chryssalis is growing stronger, living off of the feelings of another, waiting to strike, but who is it? Every security caution has been taken, every guard brought here. All we can really do is wait until she makes the first move."

Suddenly the gates burst open, a team of six guards enter the room.

"Princess Celestia, enemies have breached the first checkpoint, their headed this way."

"That's Impossible," Luna objected, "The shield showed no signs of penetration!"

"There was a hole in the defense, 2 lifesigns made it through the barrier,"

"The first one must be Chryssalis," Twilight postulated, "But what about the second one?" Princess Celestia hurried to the middle of the room.

"We must hurry to the main gate." They all run toward the barrier, but find it still intact. Something was wrong.

"Back inside, now!" Luna was the first to realize, it was a setup. The Castle Gates closed, locking the mane 6 and the 2 princesses outside.

"Quick, we need to find another way back inside the castle, Shining Armor's in danger! There's an emergency exit undernear the castle gardens, if we can get there in time, hopefully we can head them off before the changelings get to the barracks!" Time was running out, if they couldn't get there in time, the shield would break, and the Changelings Unleashed once again.

They found the entrance, leading to a dark corridor in a forgotten part of the palace, and kept running, unaware of the safety of their loved ones, the status of the changelings, or if the reinforcements would make it on time to help the looming disaster. The corridor lead to the cellar, then to the main wing of the castle. They rushed towards the barracks to find Shining Armor tied up with changelings surrounding him. One thought was in everyponies' mind at the time,

'This can't be happening!' They heard a loud pop, and then glass shattering on a massive scale. The Invasion had begun.

Outside in the courtyard, the mane six and the Royal Family watched in horror as the Chagelings swarmed in by the millions, their leader, Chryssalis at the fore.

"I'm so happy that I was able to come back and take over again," She said in a melancholy smile, "Months I've been planning my return, smuggling in my minions to take apart your defenses right under your very noses, ans you weren't even the wiser."

"You'll never get away with this!" Twilight stood in front, magic seething at the tip of her horn, "we stopped you once, we can do it again." She shot a magic spell just to have it fizzle out as the Changeling Queen raised a hoof to stop it.

"Oh how wonderful it is, this new power I've uncovered. All it took was a little time, but my how it's blossomed, and it's all thanks to you, Luna." Everypony started to stare at Luna, "The best part is she was doing this all along and she didn't even know it."  Chryssalis plucked a black gemstone from Luna's mane and placed it on a pendant she was wearing.

"Before you sent me flying back to the Edges of Equestria, I planted this little bauble on Luna after I knocked her unconscious." Luna's eyes widen as she recalls waking up to celebratory trumpets, "Ever since then this gem has been feeding off sisterly love between you and Celestia, one particular moment I simply just had to savor." She conjured up the Image of Celestia and Luna hugging in the Palace Den, "So much delicious positive energy that I just had to share it with one of my pets, meet my Arbiter. A shadow stretched across the grounds that soon came into shape and form of a massive shaded Creature with green glowing eyes.

"Go my children, Attack!" The defense was outnumbered, but that didn't stop them from putting up a fight.

The Mane six focused on the grunts while the Royal family tackled the Arbiter. Rainbow Dash Uttered an Earth Shattering 'CHAAARGE' as both sides ran to meet the other, but a glint of light in the sky stopped both sides and coaxed them to look at the mysterious flash that paused the flow of battle. A rumble came from deep within the earth, as if to meet up with the disturbance in the sky, a familiar voice fills the air in a Short but memorable battlecry...

"MUDADA!!!"...