The story of The Ancient World...
Once upon a time, the Earth was a planet without life. Only volcanos and lavafloods exist. It was a horrible time. It was volcanic eruptions everywhere, and the lava was the only that flooded the hard, stoney ground. There was no straw of grass in sight. But somewhere, far away from this chaos.. A huge sea with lots of germs living in the water, and some seaweed. There was a change, for the life to evolve. It went millions of years, before the germs could evolve to some different Pokémon. These Pokémon was Kabutos, Omanytes, Anoriths, Lileeps and Relicanths.
They lived peacefully. It went millions of years, then some of the Kabutos, Omanytes, Anoriths and Lileeps evolved in to Kabutops', Omastars, Armaldos and Cradilys. These Pokémon could live on land, and the nature also evolved. There was trees, bushes and plants everywhere. The Earth was no longer dangerous, but there was still some volcanos that was sleeping. Some of the remaining Kabutos, Omanytes, Anoriths, Lileeps and even some Relicanths, soon develop into Cranidos' and Shieldons. A few of these Pokémon's developed into Aerodactyls to.
Now there was alot of fossil and dinosaur Pokémon almost everywhere. The life soon evolved mammals, who lived everywhere. Life continue to give new animals shape. Until one day..
The Earth was threatened by a giant asteroid, that would soon hit the Earth, and obliterate all living creatures. Volcanos erupted, and the Pokémon fleed in panic. The asteroid hits Earth, and a giant wave was spread all over the world, destroyed plants, trees and obliterated all Pokémon. The Earth soon was pretty destroyed. No life in sight.
But, there was some luck. Some of the Pokémon, mostly the Relicanths, survived. And some mammals had hidden themselves undergrounds. These mammals would soon evolve into new Pokémon. It didn't took many millions of years, before Pokémon lived everywhere on Earth. Soon, humans also was shaped. At this time, humans and Pokémon lived peaceful, as they helped each other with haunting or such.
But the humans soon started to invent different things, all from the fire to build house, and more. The humans also evolved, and became more intelligent. The fossil Pokémon was long gone, as fossils.
To talk about present, humans now lived almost everywhere on the Earth, and they had invent some things some years ago, called Poké Balls. They used it to catch Pokémon with. Some scientists still are researching about the fossil Pokémon that once lived on Earth, before the humans. They use DNA they found in the fossils to resume the fossil Pokémons. They released these Pokémon to the wild, because the scientists thought they would rather live in wild that be catch. But, it didn't took long before these Pokémon was breeding, and they increaded in numbers. Some trainers still are catching some of these Pokémon.
But there are some Pokémon that protect these Pokémon and others.. They are Arceus, Rayquaza, Regirock and many of the other legendary Pokémons. Arceus was the one who created Earth. Then Dialga was born, time flow. Then Palkia was born, the space was shaped.
So, trainer... Welcome to the world where the ancients once again roam the Earth!