Pokémon Season 19 Episode 42

Ash and Alain continue their battle against Lysandre. They were successful in defeating Lysandre. Meanwhile, Chespie was absorbed by the Megalith Crystal in Lysandre Labs, which transforms into a giant Megalith Zygarde. The Megalith Zygarde was headed towards Anistar City to absorb the power from the Anistar sundial. This will result in a planetary apocalypse. Ash, Clemont, Alain, Malva, Steven Stone, the Kalos Gym Leaders, and the Kalos League Champion join forces to defeat the Megalith Zygarde.