In this epic adventure, players assume the role of a Pokémon Trainer on the beautiful region of Sinnoh where they soon encounter the Pokémon obsessed Professor Rowan. His mission is to document all the species of Pokémon using his special Pokédex and he needs all the help he can get, so enlists players to lend a hand. This means leaving their home in Twinleaf Town and travelling around Sinnoh, however while doing this, players must also work towards their ultimate goal of becoming Pokémon League Champion. This prestigious honour is only bestowed upon players who have battled and defeated all eight Pokémon Gym Leaders as well as the Elite Four and the current Champion!