Welcome to the Pacatus region, a small island known for its diverse environments, cosy towns and friendly citizens. You and your childhood friends, twins Xavier and Vivian, just accepted Professor Selina Parsley’s invitation to help her as field research assistants. Thanks to this, you will get your first Pokémon and have the opportunity to explore the wonders of Pacatus. Along the way, you'll meet numerous people, capture many Pokémon, challenge skilled Gym Leaders, and continually evolve as a trainer. Pacatus was a peaceful region for centuries, but recently dark clouds started to loom over it. Will you rise to the challenge, and put an end to the evil Team Epialtes’ (Eh-Pee-Ahl-Tees) schemes?