Back to the time when the humans reigned, where peace had seemed to envelope all the land, the humans sought to advance their technology further. They began to experiment with making pokemon more powerful. Through experimentation, they unlocked the DNA strain locked away within all pokemon, creating a new specie of pokemon, now called Neomon, and also discovered that in some, it had deteriorated to the point that they mutated into fearsome beasts incapable of emotion or connection - now referred to as monsters.
The humans became excited, and in their haste to learn more, became sloppy. The waste from their experiments was left unchecked and