Prologue
From Geosenge town in the Kalos region… 6 years after Team Flare's loss... Rey's Mega Evolution Adventure begins here… He had become champion of the Kalos League and was instructed by Professor Sycamore to search for all the missing Mega Stones, but hasn't received info as to where they might be as of yet. Right now, he only has 5 Mega Stones at his disposal, but he's on a journey to collect the missing ones that's scattered all over the region, and must obtain them before Team Flare does (the Mega Stones aren't located to where they are normally located in X and Y). He'll need the help of his Pokémon partners, and, he's gonna need the help of the XYZ Trio (Xerneas, Yveltal, and Zygarde) to stop them once and for all.
But, this won't be one ordinary adventure…
Chapter 1: The Journey Begins...
Day 1 (at night)
Right now, Rey is just sleeping after a long day of training, when suddenly...
BOOM!
"What was that?"
He runs outside to see what was happening.
"The center of the town has been blown up again! But... why?"
"Mwahahaha!"
"Well-well-well. We meet again, Xerosic."
"Yes! It is I! We have already found out your plans to collect the missing Mega Stones, and we're going to get them before you do so we can, once again, make the world a better place, but with a twist!"
"What's the twist, then?"
"First, we'll collect the Mega Stones, and then use the power of the sundial in Anistar City to end Kalos, and we'll rebuild the structure of the region to make it our own! The power of the Mega Stones harnessed by the sundial is what we believe is enough to end the region as we know it."
"I won't let you destroy Kalos!"
"Really, child? Try not to lose! Mwahahaha!"
Xerosic and Team Flare fled.
Rey thought to himself...
"Why..? Why is it they must do this..? I have already beaten them, so why they must try to end the world again? Well, regardless, I won't let them destroy Kalos!"
yaawn "But first, I need some sleep. I had the long day..."
Rey went to sleep. The next day, he starts his journey of locating the missing Mega Stones, and training.
Day 2
Rey woke up, ate breakfast, and ready to do some training. He's going to Santalune Forest to train. Right now, he's in the middle of battling a trainer that has a team of Tauros, Gogoat, and Fletchinder. But, the trainer's down to his last Pokémon (Gogoat).
Rey: Gardevoir, use Psychic!
It hit!
Trainer: Gogoat, Frenzy Plant!
Rey: Dodge it!
Dodged!
Rey: This is our chance! Use Moonblast!
Gogoat fainted! Rey won!
Rey: Thanks for a good battle!
Trainer: Yeah, thanks! You were tough, but I can get stronger!
Rey: I hope so, too!
"Woah, that was a tough battle, and he got 3 of my Pokémon!"
He got out of Santalune Forest. But, he encountered a Team Flare Grunt!
"We're not letting you collect all the missing Mega Stones!"
"I don't think so!"
So he battles this grunt. But, this grunt has 6 Pokémon! He thought it would be a tough battle, but turns out, that grunt was just weak.
"Ugh...! I'll get you next time we meet!"
"Geez, what's up with them appearing out of nowhere?"
...
Rey's communicator rings!
Rey: Hey there, professor! What's the stats on the whereabouts of some of the Mega Stones?
Professor Sycamore: Hello there! Well, for one, Beedrillite is located in the previously inaccessible location of the Lumiose Power Plant. That has been opened up because the workers there renovated the place. That's all I know, for now. Good luck!
Rey: Right. Thanks!
Now that he knows where one of the Mega Stones are, he now starts his journey in collecting them.