Satoshi, Iris, and Dent continue their journey through the Isshu region. They've recently won their eighth Gym Badge in Tachiwaki City against Homika, and Shirona invites them to stay at her villa in East Isshu, where Hikari is also visiting. The group plans to participate in the Pokémon World Tournament Junior Cup before Satoshi heads to the Unova League, but Team Rocket is secretly working on a final plan to achieve their goal of obtaining Meloetta.