Ash and his friends are hiking towards Mt. Moon, discussing the legend of a meteor made of Moon Stone crashing there in prehistoric times. At the base of Mt. Moon, the group encounters a man being attacked by a flock of Zubat. Misty prompts Ash to act, and he orders Pikachu to use Thunder Shock, causing the Zubat to flee. The lab-coat-wearing man introduces himself as Seymour, a scientist who is upset because someone installed strong lights that are disturbing the wild Pokémon living throughout the caves, including Zubat, Paras, and Sandshrew.
