Ash & co. have come to the Altar of the Sunne in the hope of summoning Solgaleo to go to Ultra Space to rescue Lusamine. However, when they reach the altar, they find Tapu Koko, Tapu Lele, Tapu Bulu and Tapu Fini who seem to intend to help. After doing a ceremony, Nebby starts to glow once more and evolves into Solgaleo. Will it be able to help out?

Ash has caught up to Lusamine with Solgaleo, but things are looking tense for his friends who are suffering at the hands of the Ultra Energy powered Pokémon owned by Lusamine. To top it off, with Lusamine having been fused with Nihilego, it's hard for Ash to rescue her as she attacks him. Lillie feels powerless to help her mother, but Ash soon discovers the ability to use a new move with Pikachu. Will they rescue Lusamine?