It's goodbye to an old friend, and hello to a new one in the biggest adventure of Ash's life! When Professor Oak sends Ash on a mission to the Orange Islands, surprises await the young Pokémon Trainer at every turn. One member of Ash's team will say goodbye forever—maybe. A stranger will join the group. But who is he, really? And a gentle new Pokémon is discovered—only it may perish without Ash's help.... This reissued illustrated chapter book is based on the characters found in Pokemon GO and the classic animated episodes on Netflix.