After arriving on Big Island, the biggest island in the Decolora Archipelago, the group encounters a Dunsparce who Ash wants to catch. During the battle, Dunsparce uses Screech, causing Ash to fall onto Iris' floral headdress and Axew to accidentally bump into Pikachu, letting Dunsparce escape. This causes a big argument between Ash and Iris and now they're no longer friends, with Iris leaving the group. After a while, Ash and Iris realize that they had so much fun together and that they miss each other. Team Rocket takes Ash and Iris' argument as an opportunity to steal Pikachu and Scraggy, but Iris comes to the rescue. After blasting Team Rocket off, Ash and Iris apologize to each other and make up.
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