Team Flare's plan is coming to fruition. Ash has been captured by Lysandre and Squishy has transformed into its 50% Forme in order to try and help Z2. Serena, having bumped into Mairin, goes to help Mairin recover her Chespin from Team Flare while Bonnie goes to follow Squishy. However, Team Flare are still nearby and have their eyes set on Squishy. Will they be able to stop Team Flare?

Bonnie and Clemont have managed to stop the Zygarde rampage, and the Lumiose City Gym is liberated, but as the gang regroups to think the incident is over, the Megalith that Lysandre, Alain and Steven recovered in Hoenn starts to transform, and it even absorbs Mairin's Chespin. The Megalith soon starts to head off somewhere. Will Ash & Co. be able to stop it?