On thier way to the Battle Arena, Ash and friends take a break. When they run out of water Ash, May, & Brock go to look for some while Max stays and feeds the Pokémon. When Munchlax eats all of the food a battle ensuses which enrages some nearby Geodude who in return, attack and Pikachu, Corphish, Phanpy, Squirtle, and Munchlax are separated from the rest. Meanwhile, Team Rocket convinces an Onix, who is the king of a Rock Pokémon Kingdom, that Ash and the others are evil. Onix then sends his Rock army to capture them... (thetvdb.com)