From the introduction:
Welcome to the world of Pokémon! This guide assumes some knowledge of the Pokémon franchise as it exists apart from this game. If you are unfamiliar, there is a great deal of information available about it. This game aims to provide a roleplaying experience that resembles the Pokémon world as portrayed in the video games and anime while keeping the mechanics easy to learn and use, and the gameplay quick and entertaining.
This game is a tabletop adaptation of the famous video game and anime media franchise. The game is very carefully created to correlate with the methods, missions, feel, and style of the source materials.