Six years have passed since the event transpired as a result of Giovanni and his manipulation of the third Zygarde Core. While Ash has been training under the mentorship of a wise fighter, his friends have been pursuing their dreams and progressing. The fallout has spawned a new threat that will need the bravest heroes in order to stop its wrath.

"A Journey's Link" is a tale about Ash and Goh, as they continue their duties as research fellows at Cerise Laboratory. Meanwhile, Serena has been pursuing her dream as a Pokemon performer, and is learning more about how to perform at greater levels. Their lives may be separated, but a looming disaster may be the link that brings them together.