"Long ago," Princess Celestia said, "there were three Princesses of Equestria:, Myself, Luna, and Cinch. One day, Princess Cinch found the Tree of Harmony. She thought if she could use this Tree of Harmony to her own advantage, she could become the most powerful princess in Equestria. It wasn't until Luna and I stopped her did we notice there was an element missing from the tree: a seventh, hidden element," Princess Celestia explained.

"What was this Seventh Element?" Twilight asked.

"The Element Of Empathy," Luna said.

"It is presumed after she took the Element of Empathy that she went beyond Equestria's borders," Princess Celestia explained. "But it seems our old sister has returned, and she is not happy.”

"Wait just an apple-picking minute," Applejack said. "If she has the Seventh Element of Harmony, she can only use it if she can use the Element, so without the Element’s Bearer, it's useless… right?"

"Which is why I asked Twilight to bring the mirror here with you," Celestia said.

"Why the mirror?" Twilight asked.

"Because we need you to bring the Seventh Element of Harmony Bearer here," Luna said.

"But who is the Seventh Bearer?" Rainbow asked.

"Sunset Shimmer," Celestia said.

Everyone gasped. The last time Sunset Shimmer and the Elements of Harmony were in the same sentence was when she had stolen Twilight's crown.

"Sunset Shimmer was an Element Bearer?" Twilight said.

"I had no idea she belonged to the Seventh Element when I first taught her," Celestia said. "After she came and Reconsiled with me, I knew she was the next Element Bearer."

"So we need you to go through the mirror and ask her to come back to Equestria for a while," Luna said.

"I can try," Twilight said, "but there are problems with me going back. One: the other version of me is there with her," Twilight explained. "Two: there is still equestrian magic in her world, who knows what could happen if I go there.

"We understand," Celestia said.

"However, we need you to do it and fast, we dont know when Cinch's next attack may happen, so we will send you there now," Luna said.

So doing as she was asked, Twilight went through the mirror and was whisked away to another dimension.

Ponyville

"While we wait for Twilight to get back, let's relax," Applejack said.

"That's easy for you to say," Rainbow said with a frustrating voice. "You did not just lose your wing and get it replaced with a metal one!"

"I understand your frustration, Dashie," Applejack said, trying to calm her future wife down, "but we can’t focus on this right now."

"Then what should we do?" Rainbow asked

"First," Applejack said, "we get you back to flying again. If you want to defeat Lightning Dust, then you need to be at your best!" Applejack said with a confident tone. "Two, we prepare for our wedding," Applejack said romantically.

"Oh, right. The wedding..." Rainbow said.

"You're not having second thoughts, are you?" Applejack asked.

"No, never," Rainbow said. "It’s just... is it safe to have it while Lightning Dust is at large?”

"You have a point," Applejack said, "but I’m not scared."

"Good," Rainbow said. "I don’t want to marry a chicken, after all," Rainbow joked.

Applejack and Rainbow Dash walked towards the Apple family barn. Rainbow was thinking about her and the many things she wanted to do now that she was going to marry Applejack. She was also wondering what she was going to do now that she had a metal wing, and most importantly, would she be able to fly with it?

Apple Family Barn

As Rainbow was lying in her bed, she was thinking to herself how she might be able to fly now that she had a metal wing, but the only thing she could think about was how loud the ‘Bucky Cash’ song was playing downstairs. She knew that her life would be really different with all that had happened.

"Hay, you okay?" Applejack said.

"Yeah, I’m okay," Rainbow said. "Just thinking."

"About what?"

"It’s just..." Rainbow explained, "so much happened in just a couple days. First, I get engaged, then I lose my wing, and now all my friends at the Wonderbolts except for one is dead," Rainbow said, trying not to cry. "What am I going to do?"

Just then, Applejack climbed on top of her Rainbow, held her against the bed, and would not let go. "You listen to me," Applejack said. "No matter what happens, I will always be here with you. I don't care if you lose your foot or wing; you will be now and forever my wife." Applejack kissed Rainbow on the head.

"Thanks," Rainbow said. Then Rainbow realised the position they where in and a smirk grew on her face. "You know...this is really kinky," Rainbow said.

"You thinking what I’m thinking?" Applejack said.

"Hell Yeah, Lets Do This!"

"Rainbow!, not so loud!" Applejack said trying to act serious but at the same time was chuckeling. then Rainbow flapped her right wing to blow a wind to close the door.

Author's Note

Three Things

1. I am not including Twilight going to the human dimension that will be an entirely different story for later Update 8/27/18: I am Not going to be doing a story about that for a while, other things to work on

2. If you are confused on which adventure Celestia was talking about was (Forgoten Friendship)

3. Sorry for the short chapter rain out of ideas hopefully the next chapter will be longer