Pokémon the Series: XYZ Specials

Professor Sycamore and Alexa explore some ruins, where they discover a stone statue of a woman named Aila, and a legend emerges. A collection of Kalos records reveals that Aila's true love, Jan, attempted to vanquish the Destruction Pokémon Yveltal. When he failed, the land was drained of all life as Yveltal became a cocoon and turned Aila to stone...