A catastrophic event occurred a few thousand years ago, and it shifted the majority of the landmass on the world. As a result of the significant rise in sea level, both humans and Pokémon were compelled to relocate to the previously mountainous territory of Keplara. Many generations later, the ever-growing population of the region would force humanity to encroach against the territory of the wild Pokémon, which would result in an increase in the level of tension throughout the region. Because there is nowhere else on Earth for humans to settle, the human inhabitants of Keplara have started looking into other possibilities for human expansion. Others opt to investigate the land or the sea, while still others focus their attention on the stars and the technology necessary to go into space.
