How it all have REALLY began.

As the moon reached the top of the night sky, the Moon Squad was moving forward towards the castle of the two sisters. As they were near the castle one of the pegasi noticed a group of ponies trotting under them as well as blue smoke near them.

"Princess they are, here all of them"

Celestia stopped in the air and turned towards the pegasi.

"And the smoke?"
"Too, my princess"
"Alright, we don´t have much time let´s move before they notice us and send a warning to our allies down there, they must not be discovered"
"Yes Ma´am"

The pegasi said as he flew a little closer to the ground and began to hoot like an owl. One of the hiding unicorns heard the 5-hoot signal and quickly teleported back to the rest of the unicorn and ground teams. He quickly found captains of both teams.

"Sirs, the target has been spotted as well as the ponies, orders sir?"
"Good, let´s split up and go for our destinations, good luck"
"Good luck to you too, unicorn team teleport to, "spot b" unicorn captain said as he and his team teleported away
"Ground team, let´s move to "spot a" and send the signal back"
"Yes sir," said a soldier and have done the signal which was 6 hoots this time
Pegasi noticed it and flew towards others in the formation, straight to the princess
"Ma´am, other teams have moved as planned"
"Good, the captain let´s move to "spot c"
"Yes Ma´am"

And as pegasi, unicorns and ground teams went onto their specific spots, Twilight and her friends moved towards the broken bridge. Celestia stops as she saw a blue pegasus fly down the mist and again up from it this time with rope in her mouth. As she landed Celestia saw her long-forgotten sister form 3 figures in the shape of pegasi. Captain stooped next to the princess.

"Ma´am?" Captain asks as Celestia is seeing her long lost sister "Ma´am"
"Uh-oh, yes?"
"Do we have to change something?"
"No, no no just, go ahead I am right after you"
"As you say, your majesty"

As the captain returned to the formation and flew ahead with others, Celestia froze aside from her wings which were still waving. She thought about how she would just fly over to her and talk to her, but then came a sudden realization. She is not yet her sister, now she is her enemy, Nightmare Moon. And as she watched a blue pegasi fly back to her friends and her sister change shape into a smoke form again she thought only about twilight well being as well as the success of this mission. Celestia after a while teleported to spot c to pegasi team already taking position near the back window of the room which contained the statue of the elements.

"We are ready Ma´am" Captain whispered to Celestia
"Understood, are others ready as well?" she asked in whispered words

And after all, soldiers nodded to her, Celestia cast a big invisibility cloak above all of the pegasi team. In the spot b now controlled by the unicorn team which was finishing their preparations was as well cast an invisibility cloak, but individually. And when the ground team arrived at their spot a, in front of the main entrance they were surprised that there were those few fillies just killing time. They stopped just under a little cliff near a tree.

"What are they doing here?"
"Don´t know, this isn´t planned, orders sir?"

After the captain thought about this situation he gave orders.

"Let´s just wait we have covered the front entrance and that´s important"
"Yes sir"

All ground team lay down. After a while, all teams noticed a bright light coming from the inside of the castle. A scout from the Unicorn team carefully moved towards the window to see Twilight Sparkle run into a big vortex and disappearing. A seconds after that he notices her 5 other fillies burst into the room looking for Twilight. And after a few other seconds, all the teams see as well as Twilights friends notice a bright light coming from another part of the castle. Scout comes back down to the captain and princess.

"Sir our target may have moved over there" scout whispered as he pointed at the light
Captain turned to the princess "orders, Ma´am?"
"I will not lose you again, let´s move into that other part, same spots, a different part of the castle"
"Yes Ma´am, give the signal to regroup"
"Yes sir," the scout said as he sent 2 arrows of magic towards the remaining teams

All three teams found their own path to get to their new position. When regrouped they started to wait again. This however Celestia herself was watching, under the invisible spell as her most faithful student battle against her sister. Celestia once again felt the need for interaction, but she knew that she must proceed like planned and so she waited in and non-ending stress, under her invisible spell. When Nightmare Moon destroyed the stone ball which represented the elements she almost gave up hope. She nearly gave the order to finally end this, but she stopped mid-air upon hearing Twilights friend's voices. She slowly returned her hoof down and the unicorns backed up to the ground. As she was watching the creation of the elements of harmony and the rainbow as it surrounded her sister she couldn´t help but let a tear down her face. Captain of the unicorn team was aware of what comes next, and so he asked.

"Your majesty" he whispered "orders?"

Celestia slowly returned under the window near the captain and with the tear running down her face said.

"Mission accomplished captain, start the return phase," Celestia said with a smile and a few tears
Captain began to smile and with excitement said "understood Ma´am, scout send the green light, we have out princess back"

Scout began to smile too and almost immediately let out 2 green balls of magic and sent them to other teams. Unicorn captain saluted to the princess with a smile and they teleported to safety along with his soldiers. Pegasi team flew for the ground forces and carried them safely away from the castle. Celestia began to fly to a window and with the words "Indeed you do" she let the sun came to the sky and along with it fly into the castle through the window….