Synopsis

Ash and Professor Kukui observed a troubling pattern: the Rockruff residing with the professor would vanish during the night, only to reappear the following morning bearing grievous injuries. Investigating this phenomenon, they discovered Rockruff was secretly participating in a hidden Pokémon training ground. Moved by this revelation, Ash resolved to assist Rockruff's training. Under his guidance, Rockruff mastered the Rock Throw technique. The culmination of their efforts arrived when Rockruff