Season 18, Episode 02 – The Guardian’s Challenge!
Having arrived at his new Pokémon school, Professor Kukui who is the teacher and its students host a surprise welcome party for Ash. Soon after, the guardian Pokémon, Tapu Koko, pays another visit to Ash to battle Pikachu. Tapu Koko teaches Ash how to use the Z-Ring. Ash and Pikachu manage to unleash the Z-Move, Gigavolt Havoc, but the Z crystal is soon shattered after Pikachu’s immense release of power. In order to regain the power of Z-moves, Ash decides to go through the island trials.
A young boy named Ash Ketchum embarks on a journey to become a “Pokemon Master” with his first Pokemon, Pikachu. Joining him on his travels are Brock, a girl-obsessed Rock Pokemon Trainer, and Misty, a tomboyish Water Pokemon Trainer who may have a crush on him. Ash and Co. end up traveling through various regions, including Kanto, the Orange Islands, and Johto, and then enter the Pokemon League competitions there. Along the way, they run into many confrontations with Jessie, James, and Meowth, a trio of Pokemon thieves who are apart of an evil organization called “Team Rocket”. But everytime Team Rocket try to do their evil deeds, they fail thanks to Ash and his Pokemon.