Fight for the Meteorite! (Japanese: マグマ団VSアクア団、再び！えんとつ山の戦い！！Magma Gang VS Aqua Gang Again! Mt. Chimney Battle!!) is the 54th episode of the Advanced Generation series, and the 328th episode of the Pokémon anime. It was first broadcast in Japan on December 4, 2003 and in the United States on November 13, 2004.
The gang rushes to the cable car headed up Mt. Chimney, boarding it just in time along with a disguised Team Rocket. As the car travels upward, they spy both a red helicopter and a gray helicopter.
Professor Cosmo is on the mountain, searching for a recently-fallen meteorite. Team Magma and Team Aqua arrive, both after the meteorite. Team Aqua hijacks the cable car system and causes the cars to stop. Team Rocket reveals their identity, but the kids are too busy trying to escape the cable car to care. Ash manages to get out to the mountain.
Teams Magma and Aqua fight, with Team Magma's Dark-type Pokémon overpowering Team Aqua's Water-type roster. Back in the cable car, the kids enjoy lunch with Team Rocket.
Ash meets Professor Cosmo, but Team Magma gets the meteorite. They place the meteorite inside a machine designed to activate the volcano. Professor Cosmo distracts Team Magma while Ash tries to steal the meteorite back. Pikachu ends up shocking both Team Magma and the machine, causing an overload. Professor Cosmo pushes the machine into the lava, destroying it (and the meteorite).
Team Magma departs with the knowledge that their machine worked. Team Aqua leaves, pleased that Team Magma did not succeed. Team Rocket falls down Mt. Chimney. Ash and his friends get directions from Professor Cosmo and head for Lavaridge Town.
The two groups begin to battle each other, giving Professor Cozmo the opportunity to escape. Noticing his disappearance, a small group from both teams begin to pursue him down the mountain. Meanwhile, a small group of Team Aqua agents storm into the summit cable car station and successfully overpower the workers. They shut down the cable cars, stranding both Ash's group and Team Rocket halfway up the mountain. Brock tries to use the emergency phone, but finds that nobody in the control room is responding. In the resulting panic, Jessie, James, and Meowth drop their facade as tour guides and reveal their true identities. The trio perform's their motto, but the group orders the trio to hold off battling because of the confined nature of the cable car. Realizing that they are on their own, Ash takes a grappling hook from the cable car's storage cupboard and uses it to latch onto a nearby support tower. He begins to climb across the rope to the tower, but is nearly knocked off when Team Rocket tries to jump on as well. The ensuing scuffle causes the rope to snap, leaving Brock, May, Max, and Team Rocket stranded on the cable car, while Ash finds himself on the tower. He promises to come back with help, then climbs down the tower and begins to run up Mt. Chimney. Along the way he crashes into Professor Cozmo, and realizes he is being pursued by Team Magma and Team Aqua.
Higher up on the mountain, Team Aqua fights a losing battle, realizing they are outmatched, Shelly orders a tactical retreat. Letting them escape, Tabitha orders his group to head to the summit so they can prepare for a test of some special equipment. Introducing himself to Ash, Professor Cozmo tells him that the meteorite is part of a large asteroid that fell from space. When Ash asks he says he has no idea why Team Magma or Team Aqua would want it, as it doesn't seem to have any special properties. Suddenly a Golbat comes swooping down and snatches the meteorite from Professor Cozmo's hands. It flies to its Trainer, a Team Magma member who orders his group to rendezvous with Tabitha at the mountain's summit. They depart, ignoring Ash and Professor Cozmo. At the summit Tabitha receives a message about the meteorite’s recovery. Laughing he orders his agents to start preparing the machine, a strange laser like device that points at the center of Mt. Chimney's volcanic cauldron.
Meanwhile, in the cable car, May and Max start to get hungry. Brock passes out sandwiches, and even shares some with the famished Rocket trio. Putting aside their differences for a moment, everybody sits down for a quick meal. Suddenly the cable car begins to shake, as the wind around the mountain starts to pick up. Everybody inside hangs on for dear life, Brock urges Ash to hurry up and save them. Arriving at the summit, Ash and Professor Cozmo watch as Team Magma places the meteorite into the laser, which they begin firing at the center of the volcano's lava flow. Professor Cozmo speculates that the device will cause the volcano to erupt, which would deal untold damage to the surrounding area. Ash decides that the only way to stop the machine is to sneak up and snatch the meteorite from inside of it.
With Professor Cozmo providing a distraction, Ash approaches the machine and attempts to grab the meteorite out of it. Finding it is protected by an electric lock, he has Pikachu use Thunderbolt in an attempt to overload the machine. It works, however the entire machine begins to go haywire. Looking back at the machine Tabitha notices Ash, recognizing him from their previous meeting he rushes down to stop him. At the last second Professor Cozmo arrives and knocks him back. Realizing that there was no time to get the meteorite out, Professor Cozmo shoves the entire machine into the depths of the volcano. With their mission failed, Tabitha orders a retreat. On a nearby ridge, Shelly watches Team Magma's departure, and orders Team Aqua to withdraw as well. Both sides conclude that even if they failed to secure the meteorite, at the very least they kept it out of their rival’s hands.
Later, a rescued Brock, May, and Max thank Ash and Professor Cozmo. Team Rocket attempts to nab Pikachu while they're distracted, but the sudden appearance of Wobbuffet causes the ledge they are standing on to break loose, sending them sliding back down the mountain. Waving goodbye to Professor Cozmo, Ash and his friends head down the Jagged Pass, towards Lavaridge Town.