A/N: It's... back! Just when you thought it was over, there's one more left to go.

The reason why I had decided to go back to the Smarty Heart series again for one more shot was because the idea came to me while watching mid to Season 4 finale and the fact that I'll be heading to college this September. That's right, I got accepted into college. *audience gives round of applause*

But to anyone who is currently reading my other story that's completely original, "Learning To Live", I will try to update on it whenever possible one chapter at a time. But let me get on to other news.

THIS FOURTH BOOK IS THE FINAL BOOK. NO EXCEPTIONS. After this book is finished, there won't be any further activities related to the Smarty Heart series. I want to move onto other projects in the real world you might know me by when I'm all done. After the epilogue is written, I will personally write an extra chapter not related to the story, but more to thank everyone who was reading this and reviewing the series, yada-yada with a few Author's notes that will acknowledge the problems that came and went for the entire series. An example would be: the LONG hiatuses to finished the third book "Fire Phoenix". My goodness, those were the most frustrating for me because of writer's block. Even then, I still suffer from it.

I'm hoping to have this final book of the series end on both a sad and a happy note. Some may die, some may live: it all depends on what happens in the final battle and the sacrifice to bring down the bad guy in order to save Equestria, whether it's favorite characters or OCs that you submitted. It's for the fact that I've caught onto the entire "Mary Sue" and "Gary Stu" terms of fanfiction writing. That is why I am going to be strict for this final book. No Gary Stus or Mary Sues, plus all OCs are locked in, so no more can be submitted.

By the way, I don't own My Little Pony. I already know that Hasbro owns it. I just love writing fanfiction of it when I can. But for now, let us get onto the first three chapters of "The Mystery of Equestria". Here we go... *awkward pause* Really? An entrance like that to make for myself?

Twilight: Um, I think you have one more thing to say.

Never mind! One more thing. Besides this series ending in a few months, feel free to also check out my other fanfiction "Learning To Live". Sorry, no OCs are allowed in that one. And a heads up, I know you'll miss the series once it's finished, but I won't say farewell, just feel proud of the achievements your OCs did in this story and how they did so at doing it. So this is basically a last chance to check up on your submitted OCs. I'll speak to you again at the end of the story! But will occasionally leave Author's notes this time.

Twilight: Good job! Now start the story for them!

Rita: Yeah, I want to see some action!

Alright you two, calm down. It begins now. This is "The Mystery of Equestria". Well, the first three chapters as I stated before.

With friendship,
Tw1 Spark1e

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Four Months Later…

It has been four months since the defeat of the four human leader's evil sister Maleficia. Most of the dragons that had been working with her in the capture of Equestria were reverted back to their normal selves and had no clue about what had happened, but they were forced as punishment to clean up the streets of Canterlot, home of Celestia and Luna. They were even forced to take down the statues of Maleficia they had placed all over Canterlot. They had replaced the statues of the Alicorn sisters while this had occurred.

After the cleaning of Canterlot, the dragons involved with Maleficia's crimes were put on trial and they were forced to plead themselves guilty after Princess Celestia used a memory spell and showed before them: their merciless crimes. As punishment and the final verdict: They were to do community service around Equestria for at least two months. The months passed and Equestria had been restored back to normal and the dragons were allowed to go back to their mountains to sleep. But even the dragons that destroyed Manehattan were forced to rebuild it with everypony before flying off.

In the previous month since the dragons' punishment, Princess Celestia and Reina had passed a bill that they suspected everypony would listen to quite well. The bill was known as "Peace and Unity", and it was meant to make sure that there will be peace in any of the regions of Equestria without any trouble or betrayal. Of course, without the heroes of Equestria wielding the seven Elements of Harmony, the bill would not have passed and Equestria would still be in ruins.

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Night before the Day of the Summer Sun Celebration

Smarty stands over the balcony overlooking Equestria, proudly watching over the small humans and ponies that worked together to get the evening back to their homes for a good night's rest. He lets out a very small smile when his eyes turn to the left slightly and he sees the stone statues of him and the human leaders known as "Reina", "Rose", "Sara" and "Rita" standing there. It was the very spot where he and them had fought and defeated Maleficia. But it wasn't him alone, it was with his friends and the power of friendship.

Celestia knows what could have happened to Equestria if it was the opposite and he was killed in the fight against her, she might have gone off and destroyed all the other leaders in control of Equestria and let the mind-controlled dragons take over as superiors with her on the throne. Ponyville would have been thrown into chaos and been the next disaster area.

The sound of hooves was heard trotting onto the balcony, catching Smarty's attention. He turns around and his smile grows warming. It was his wife Twilight, and his two children Dream Charmer and Starlight. They seemed rather happy to see Smarty.

"My family." Smarty says, offering them to come closer for a family hug. "Come to Papa. He wants to see you."

Starlight and Dream Charmer bounced forward towards their father and both began to hug him. He in return shared a hug with the both of them. After the hug, they let go and look up at their father. "Are you excited for tomorrow morning?" Smarty asks the both of them.

"Yes Daddy. We can't wait to see Princess Celestia raise the sun and Princess Luna lower the moon." Dream Charmer said to him.

Starlight says "I just hope we'll be allowed to get up early to see her raise the sun."

"And I assure the both of you that you'll be able to see this moment. It'll be something you'll never forget." Smarty says, giving the both of them a pat on the head.

Twilight trots forward towards her husband, she is giggling. "Alright now, the two of you have some sleep to catch up on. Tomorrow morning is a big day for the two leaders of Equestria."

Starlight looked curious. "But mommy, aren't you a princess? You do have the wings after all and are the Princess of Magic. And Princess Cadence rules the Crystal Empire." He asks.

"Yes Starlight. Mommy is a leader, but I don't have my throne just yet." Twilight said, looking down at her young son.

Dream Charmer bounced up and down, saying "If you do get your own throne, I bet it will be a castle built just for you."

"Yes, yes." Twilight says, blushing a bit in embarrassment. "Now off to bed you two, you don't want to feel tired."

"Okay mommy." Dream Charmer says, yawning a bit. "Come on Starlight."

The two young foal and filly trot off into the castle and Twilight faces her husband once again. She is smiling at him.

"Hey." Smarty says, taking his wife's hoof and holding onto it. The both of them share a gentle kiss with one another on their lips. "What's on your mind?"

"Nothing Smarty, just you. But there is one other thing. Since Equestria's been restored, I can't help but feel that something is missing from me. Sure I'm a princess now, but I don't have a throne yet." Twilight says, sounding a bit disappointed.

Smarty uses his hoof, letting go of her gentle hoof and using it to gently stroke a bit of her soft and silky mane. "It's alright Twilight. I don't necessarily have my own throne either, but I don't let that get in the way of what I do as a prince."

Twilight just sighs softly, saying "I just really hope that I don't disappoint Princess Celestia for the event tomorrow morning."

"And I assure you that you won't." A female voice says to them. They turn their heads towards the door and see none other than Princess Celestia standing there. Both Twilight and Smarty bow down before the princess of the sun.

"There's no need for that now." Princess Celestia assures.

"Sorry!" Twilight says, giving a sheepish looking smile.

Celestia gave out a bit of a kind giggle and says "No need to apologize."

"Sorry!" Twilight apologizes again.

Princess Celestia keeps her smile and joins the prince and princess by the balcony. "I must admit that it is wonderful to actually be looking forward to the Summer Sun Celebration." She states.

"What do you mean?" Smarty asks, curious.

Princess Celestia looks at the tower and can see the shadow of her sister raising the moon. She turns back to both of the two. "For my subjects, it has always been a celebration of the defeat of Nightmare Moon. But for me…" Celestia sighs sadly, clearing her throat to continue. "It was just a terrible reminder that I had to banish my own sister."

"I guess I never really thought about it that way." Twilight says, feeling a bit bad.

A smile grows on Celestia's face and she looks at Twilight. "But now it has become a wonderful reminder of her transformation back into Princess Luna, and our happy reunion. I am so pleased that the both of you will be playing a role in the festivities. I know that it must be difficult to see your friends return to Ponyville."

Twilight lowers her head a bit. "Maybe a little." She sadly says. However, Celestia places her hoof gently under her chin and gently pulls it up to look at her.

"You may no longer be my student, Princess Twilight, but I hope you know that I will always be here if you need me. Just as I hope you both will always be there when I need you." Celestia says, smiling to the both of them.

"Thank you Princess." Smarty says, nodding his head.

"Now I suggest that the both of you get some sleep. It's a big day tomorrow." Celestia says, trotting back towards the door.

Princess Celestia leaves the balcony and begins to trot through the hallways. She was heading off to bed for a goodnight's rest. Even the main leader of Equestria needed to have rest when it came to events like this. All seemed silent in the hallways.

Little did she know that a long black vine of an unknown plant was following her… It made a soft, slithering sound like a snake. Finally, Princess Celestia catches onto the noise and is unable to see what it is when the black vine grabs her. All she could do was gasp and quickly yelp before she was knocked unconscious.