Pokémon - Season 15 - Eps 48: Meloetta and the Undersea Temple
Ash continues to train at Cynthia's villa until Ridley (a member of an ancient civilisation dedicated to protecting Meloetta) and his Golurk hear Meloetta's song and come to take Meloetta back. At first, Ridley assumes Ash is associated with the thieves, but this turns out not to be the case. Before Ridley can take Meloetta home, Team Rocket assaults the group and capture Meloetta and summon up the ancient Abyssal Temple through its power and song. The heroes try to fend off Team Rocket, but with Giovanni himself present they are too strong.
About Pokémon

Title: Pokémon
First Air Date: 1997-04-01
Last Air Date: 2023-03-24
Status: Ended
Rating: 7.9/10 (from 1974 votes)
Language: JA
Seasons: 26
Total Episodes: 1235
Network: TV Tokyo TV Aichi TVQ TV Osaka TVh TSC
Genres: Animation, Action & Adventure, Sci-Fi & Fantasy
Production Companies: Shogakukan Production, TV Tokyo, OLM, Shogakukan-Shueisha Productions, SOFTX, TV Tokyo Medianet
Synopsis
Join Ash accompanied by his partner Pikachu, as he travels through many regions, meets new friends and faces new challenges on his quest to become a Pokémon Master.
Cast

Rica Matsumoto
Satoshi (voice)

Ikue Otani
Pikachu (voice)

Daiki Yamashita
Gou (voice)

Kenyu Horiuchi
Narrator (voice)