In a parallel world where mega evolution has not yet been revealed, this land is only inhabited by Pokémon from before the ninth generation. Ancient mysteries shroud the world like a thick fog, causing countless explorers to come forward one after another, risking their lives to find out the truth. Xia Yan and his partners will work side by side to tear apart the web of conspiracy, walk through the wreckage of the crisis, and step by step approach the dust-laden ultimate truth.
When the fog clears, will the whole world be the answer they dare to face?
