While training for the World Tournament in Undella Town, Dawn suggests that Ash & Co. need to relax so they travel to a nearby island where many Onix dwell. However, as they explore the island, they inadvertantly anger the Onix that dwell there and the gang gets separated. As they try to find eachother, they keep getting attacked. Meloetta gets angry at Ash getting attacked and manages to change form. Will Meloetta help stop the Onix attack and will Ash & Co. find eachother?

While training for the World Tournament in Undella Town, Ash & co. soon find that the power for the entire town has been taken out. Officer Jenny appears and informs then that a Dragonite is responsible. Iris is angered by this, claiming that Dragon-type Pokémon would never act this way and runs off to the substation. Ash, Cilan and Dawn quickly follow and find the Dragonite in the area, injured. However, Dragonite has a distrust for humans and starts to act hostile. Will Ash & Co. find out what caused the blackout and will Dragonite get calmed?