Sun dreams of money. Moon dreams of scientific discoveries. When their paths cross with Team Skull, both their plans go awry... Lost in an alternate dimension, Sun and Moon battle to help their new friends defend the eternally dark city of Ultra Megalopolis. But then a betrayal deprives them of their transportation home! Meanwhile, what surprising news does Lillie receive?

Reads from right to left. "A Pokémon adventures special edition"--Back cover. "Original Japanese edition published by Shogakukan"--Colophon. "Adventures inspired by the best-selling video games"--Back cover.