Synopsis

Having finally defeated Team Plasma, Ash resolved to return to Kanto. Iris and Cilan elected to accompany him, eager to hone their abilities, and Professor Juniper arranged passage for all of them aboard a vessel sailing through the Decolore Islands, crewed by individuals shrouded in secrecy. Once they had settled into their cabins, however, Ash discovered a disconcerting truth: the doors were locked, and their Pokémon were missing.