The one and only Pokemon Game taking part in the Past of Sinnoh- Hisui. Filled with dangerous creatures called Pokemon, a ten year old girl named Mia is sent into the past from the future to create the very first Pokedex. Accompanied with her starter Oshawott, best Pokemon friend Pikachu, and best human friend Rei, join this brave girl as she sets out to help the future by affecting the past.