It’s up to Ash and his companions to discover the secret behind the immense and powerful forces at work.
But will they have time to return the Jewel of Life before Arceus destroys everything and everyone they've ever known? Not even the combined might of Dialga, Palkia, and Giratina can stop Arceus from devastating all existence across multiple dimensions. Meanwhile, a battle between Legendary Pokemon Dialga and Palkia rages directly above the town, threatening to tear a hole in the space-time continuum! But Ash and his companions, joining forces with their new friend Sheena, may have discovered the only way to set the ancient betrayal right. Can they find enough courage, strength and friendship to unearth the mystery and save Crown City? Ash and friends meet up with the feisty Pokemon and discover their common interests – a love nature and a wish to explore the connections between humans and Pokemon.Now, Arceus—enraged, vengeful, and seemingly unstoppable – has returned to reclaim that stolen power.