You get one Eevee at the beginning, and it’s also your only Pokémon. So don’t forget to buy Pokémons at Pokémon Center.
There’s no story, all you have to do is try your best to win as much as you can in the arena.
You get rankpoints when you win, lose rankpoints when you lose. Also, game difficuly is depends on your rank.
Like the rules of Wi-Fi battling nowadays, you can only use three different Pokémons with different held items in battles.
To learn moves, simply open TM/HM menu. All 250 moves are available and unlimited.
https://drive.google.com/file/d/1y1DCNbrs98AfBcRuFajI2ELa1OjM623F/view