In the 1820s, the Fieroeste Gold Rush was at its peak. People from everywhere flocked to the newly purchased territory of Fieroeste in hopes of striking it rich. Towns were developed in hotspots across the region, and Sheriffs were instated to keep order in the cities.
Now in 1843, the Gold Rush has ended, and many once hopeful people have abandoned the region. Many others remain, calling the newly developed Fieroeste their home. However, lawlessness has begun to creep back into the region with the forming of the Four, a group of criminal masterminds who wish to take control of what is left of Fieroeste.
Pokémon trainers from everywhere have taken up the call of the Sheriffs, who are searching for any strong enough to help them defeat the Four. However, in order to ensure their safety, any trainers who wish to challenge the Four must first prove their worth by defeating Fieroeste's Sheriffs. Likewise, those who wish to aid the Four must first prove themselves by defeating them.
In the race to control Fieroeste, only one thing is certain: