Origin of Solar flame

1 year after Luna's reformation, Solar was relaxing inside her house reading. She heard the sound of rain on her window and looked outside. Right away, she noticed that the rain was brown. Solar went outside and accidentally got some of the rain in her mouth, but it tasted like chocolate milk.

She spotted Twilight and Spike heading over to Sweet Apple Acres and followed them. When she got there, she noticed even more strange things. Bunnies with unusually long legs, oversized apples, and the corn field which was full of popcorn.

"Hey, Twilight." Said Solar

"Hi Solar." Replied Twilight

"Do you know what's going on?"

"No, unfortunately. I tried fixing this with one of my spells, but it didn't work."

"Let me try." Said Solar. She lit up her horn and released a intense wave of magic and fired it, returning everything back to normal.

Then Spike burped a letter saying that they were needed in Canterlot immediately. Solar teleported them all into the throne room where Celestia was pacing. She told them who was causing the strange things, that his name was Discord, and that they would need to use the elements of harmony to defeat him.

But when Celestia opened the chest that the elements were supposed to be in, they weren't there. Then Discord appeared in the window, literally.

Discord somehow knew about each of the wielders of the elements, but he didn't know about Solar's powers. Celestia demanded that Discord reveal the location of the elements, which he did, but in riddle form.

Twilight thought that the elements were hidden in the castle labyrinth, so the 7 ponies all went down to it. Discord then appeared and challenged them to a game. If even one of them failed, they would all lose.

The ponies all agreed to go into the maze together, but were separated, forcing them to go different paths. Solar's path took her to a large tree with a mirror inside it. The mirror displayed Discord's face and he tried to convince Solar that her friends weren't trustable, but Solar used her magic to disable Discord's connection to the mirror.

"How did you do that?" Asked Discord, "Nocreature should be able to disable the magic of a draconequus."

"You think that you're the most powerful being on Equus with your chaos magic. Please, magic is just one of the many things that I can control. Doesn't matter what it is, where it came from, how old it is, what it's used for, or who possesses it. I control everything that exists in the universe. I am Solar Flame, Goddess of the universe."

Discord was growing nervous around Solar, especially after being told that she could destroy him in an instant.

"Now, take me to the others, and if I find that you did something to them, then you better turn them back to their normal selves or else."

"No, I won't. If you want them back to their normal selves, you'll have to find a way yourself."

Discord snapped his fingers, sending Solar to her friends. But Rainbow wasn't there and Pinkie, Fluttershy, Rarity, and Applejack were faded. Then the entire maze suddenly disappeared into the ground, leaving the 6 ponies and Discord standing there.

Discord revealed that the elements were never in the labyrinth in the first place, leaving Twilight and Solar confused as he teleported away.

"Wait, I understand his riddle now."

"What is the answer? Where are the elements?"

"Twilight, where did you come to Sweet Apple Acres from this morning?"

"The library, of course."

"Come on, let's go defeat Discord."

As they were walking back to the library, things were getting stranger and stranger. Now the buildings were floating, the day and night cycle was sped up, the dirt roads were replaced with soap, and the ground was checkered. Luckily, Solar used her power to turn the roads back to dirt.

When they got back to the library, Twilight found the book with the elements while Solar kept the others away from her. They went back outside and tried to use the elements, but since the some of them were faded, they failed. All of the ponies left, including a now gray Twilight, left Solar alone. Solar felt like she couldn't trust them anymore and also turned gray.

When she walked back to her house, she felt depressed. She thought about how her friends broke her trust.

Suddenly, she heard a whisper. "Solar"

Startled, Solar looked around the room for the source of the whisper.

"You will not be able to find me like that."

"Who are you?"

"I am your soul, the origin of your powers. I have a message to give to you. Out of the 7 elements that you and your friends represent, trust is the most important. That is why you are so powerful. Without trust, their is no friendship. Now, go and show your friends how much trust you can give."

While listening to her soul, Solar slowly gained her color back. Then there was a knock on her door.

When she opened it, all 6 of her friends were standing there, with their colors restored.

"Solar, it's time to defeat Discord." Said Twilight

"Count me in." Replied Solar

They walked over to where Discord was sitting on a throne about to drink chocolate milk. He was still expecting them to fail like they did before. But this time, they were going to succeed.

Solar used her magic to power up the elements. They began to flash and shoot projectiles at Discord, who had his eyes closed until one passed by him. A few more were shot at Discord before a rainbow beam, just like the one used on Nightmare Moon, enveloped Discord and turned him back into stone. The rainbow then turned everything back to the way it was, and Discord toppled over.

Later in Canterlot, a celebration for Discord's defeat was going on. The mane 7 were congratulated for defeating Discord. An extreme party followed, and it lasted for hours. Then the mane 7 and Spike went back to Ponyville, for it was very late.

Solar went back to her house and went to sleep. She would have many visits from her soul again in her life.