Koukoku no Princess Diancie

This film serves as a prequel to the 17th Pokémon movie, Pokémon XY: Diancie and the Cocoon of Destruction. It focuses on events that take place before the main story of that movie, introducing elements and characters relevant to the narrative of Diancie and the challenges she faces. The story explores the origins and early conflicts involving Diancie, setting up key moments that will later unfold in the main film.