After many years seeing the signs of a certain King's return Princess Celestia decides to travel to the North to search for his presence. She does not leave a note fro her younger sister, Princess Luna, she cares dearly for her little sister indeed. Celestia put on her armour and flies out of Canterlot towards the North.

She arrives within a few hours she feels very uneasy and it's not because of the cold. She lands on the soft snow and walks through searching for a certain shadow. As she wanders through the snow aimlessly she cannot find her bearings, "Where are you Sombra?" She asked to herself. Suddenly she hears chanting coming from a nearby cave she enters cautiously awaiting what she will see and what she saw was a massive army of dark ponies with glowing red eyes.

Celestia can't believe her eyes she scans the cave from a ledge big enough to support her, the ranks of these dark ponies span the whole cave which is about 1000km in surface area they all begin to cheer as they turn to the front of the cave where a balcony has been fashioned into the rock.

Celestia follows the dark ponies' eyes and too her dismay she sees him, King Sombra the tyrannical ruler of the Crystal Empire back in his true form a unicorn with a glowing red horn he begins to speak, "I stand before you today as your leader, your creator and your King, it is time that we take back what is rightfully ours, the world has changed we do not rely on hooves anymore, but, now we have swords and we will destroy the ponies that banished me from the Crystal Empire. I shall be King once more but over all of Equestria, but, first we have to take care of Princess Celestia she is the one of the rulers of Equestria and if she falls Luna will flee."

He begins to laugh evilly as the robotic ponies cheer for him, Celestia cannot believe what she has just heard, she has to flee and warn her sister to assemble the army, she silently flies from the ledge and to the cave's entrance. As she does she manages to escape unscathed or alerting the mass of robots, she hurriedly flew to Canterlot to warn her sister about the approaching threat. She flies into her bedroom and burts into Luna's without regarding the Royal Guards asking what was the matter which concerned their Princess.

"Luna wake up!" Celestia shouted as she shook her sister awake. Luna was slightly shocked to see her sister in such panic, "What is it sister? Is something wrong?" She questioned her older sister, Celestia calmed down and turned Phalanx her Captain of the Guard who at the moment was standing in the doorway, "Phalanx assemble the army Sombra is coming with war to take over Equestria." Phalanx salutes without a word and leaves hastily. Celestia turns back towards her sister who is hugging her in fear of the approaching war, "Luna you must listen to me, take your royal guards and leave Equstria." Luna looks up at her older sister and questions this immediately, "Why Celestia? Equestria is my home as well I want stay and fight with you." "Luna I can not bear to lose you in the war, although we are immortal we are not invincible, we can still be hurt or even killed." Celestia said with a convincing tone.

Luna Hung her head low and looked back up at her sister, "Okay sister I shall leave Equestria, for you." tears begin to well in her her eyes and a few escape them.
"However I shall not take my Royal Guard, for if Sombra has spies they will surely recognise them I would surely be killed before I even made it to Manehatten." Luna had made a well argued point which Celestia never thought of. "You are right Luna, if Sombra does have spies they would surely see your recognise your Guard," Celestia siad reinforcing Luna's earlier statement. Celestia then asked Luna "Luna it is time to raise the moon and make your escape, for if war comes it will not be in the day."

These were the last words spoken by Celestia towards her sister, after Luna had raised the moon she flew off to the city of Manehatten to take a ship to another land away from Equestria, she wore her cloak, the same one from Nightmare Night a few years ago so no one would recognise her as Princess Luna. After Luna had left Princess Celestia joined Phalanx with the army and they marched North, they did not have to travel far until they found Sombra and his army of robot ponies. Soon the sky was blazed with a red colour from the fire that the battle had caused, swords and spears and bows and arrows could be heard from all over, many of the Canterlot army fell, but, so it was for Sombra's army, the armies were mixed up they fought each other within the ranks. Celestia was taking many down by herself, but, she had her eyes on only one pony.

King Sombra was taking down many of the Royal army as well, he turned to Celestia and stared at her and an evil smile forming on his face. Celestia flew towards her opponent and swiped her sword downwards, but, Sombra blocked her attempt and they battled atop a hill above the rest of their armies. Blow after blow, counter after counter, Sombra and Celestia were equally matched, however, Sombra never played fair. He held his sword high and waved it in the air and struck Celestia's with little effect, "You'll have to do better than that Sombra if you wish to defeat me," she declared as she deflected the weak shot. Sombra only chuckled, "No for you see I have already won," he said and before Celestia could respond she felt a sharp pain in her chest, her sword fell to the ground, she had been struck by an arrow. Her hooves collapsed under her she felt weak and she could fight no more, she then rolled over onto her side and her eyes close from the pain, but, she is still alive.

The Canterlot army looks to the hilltop to see their Princess defeated Phalanx runs up the hill and knocks Sombra back so he could attend to his Princess seeing that she is still breathing he calls to the rest of the army, "Fall Back to Canterlot!" the remaining ponies in the Royal army follow his command and retreat back to Canterlot. The dark ponies cry in victory after their defeated enemy, Phalanx was carrying Princess Celestia on her back and into the castle. He places her on her bed and tells other guards to warn all the citizens of Equestria that Sombra is coming, he looks to Celestia and removes the arrow carefully as not to break it. Celestia awakens a few minutes later and looks at Phalanx weakly, "Phalanx... tell all the ponies of Equestria... Sombra is coming..." she said to Phalanx who replied, "It has already been done Princess," he said bowing to her. Celestia laid her head on her pillows and said to Phalanx, "Tell Luna that she must not return to Equestria ... Phalanx do not surrender continue fighting for the free ponies... and tell Twilight Sparkle that I have... fallen." She said before she breathed her final breath and her eyes closed permanently. Phalanx stood there seeing his Princess dead, he lifted his head high and called for other guards to help him bury her in the cemetery before Sombra arrived. Phalanx journeyed to Ponyville to alert the citizens of Sombra and the fall of Celestia, after he told the news to the mayor he went to the Library where Twilight stayed he knocked on her door.

The door opened to reveal a purple alicorn standing behind it, "What is it Phalanx?"The purple alicorn asked. Phalanx looked into her eyes, "Princess Celestia is dead, she was killed in battle with King Sombra," Phalanx replied and turned away after he told his news he looked to the East to see the sun rising, a last event before Celestia died. He cantered off to rally the remainder of the army. Twilight just stood there processing what she had just heard, she closed the door silently and walked to the center of the library, she collapsed and began to cry deeply. Soon after this she set out to find her friends.

After the news had spread about Sombra approaching and Celestia falling, the days that followed were filled with death and destruction. Sombra had taken over all of Equestria except for Canterlot which was where the final stand of the Royal Army was held the battle was long and hard fought, but, Sombra had defeated the army and all that survived were imprisoned and the other ponies throughout Equestria were enslaved to work for Sombra, mining, farming, fishing, clearing weather and pulling heavy objects for the King. Anypony that spoke out against hime were either killed or imprisoned.

Meanwhile Twilight Sparkle and her friends were in hiding no one where they had gone, they seemed to vanish without a trace, Princess Cadence was nowhere to be found either, Sombra grew impatient with trying to find them made made them criminals and placed bounties on them so if anypony turned them in they would be rewarded, all of Equestria was in ruin with posters of Sombra's face them declaring "OBEY" Luan heard of the news and she has also gone into hiding knowing she is the true heir to the Canterlot throne.