On their way back to Mauville City, Ash and friends travel through the Valley of Steel, home of many different kinds of Steel Pokémon and a potential shortcut to Mauville City and then Petalburg City. On their way through, they come across a Torkoalbeing attacked by several Steel Pokémon. After using Pikachu to scare the Pokémon away, the Fire-type hears a noise, also scaring it off. Later, having reunited with Torkoal, Ash and friends become determined to help Torkoal defeat the Steelix that lords over the valley. Will they succeed in cutting through the valley unharmed or will the angry Steel-type block their way?
The gang goes through a path that will lead them to Mauville City, then to Petalburg City. However, when they arrive, it isn't the Mauville City, but a vast of canyons. A Torkoal is being attacked by two Magnemite and a Skarmory. Ash goes to get Torkoal, but is attacked by Magnemite as well. Pikachu uses Thunderbolt, but misses. The Skarmory and Magnemite go away. The gang turns the Torkoal and it is happy, but something else is heard in the distance. The Torkoal runs away.
Team Rocket is traveling in the balloon and spot a Skarmory. Meowth translates that they need to go, but is late when Skarmory cuts the balloon. The gang goes through the canyons and the Magnemite attack them. Pikachu uses Thunderbolt, but misses, so the gang goes to hide when they are attacked once more. Max advises May to bring Torchic when Fire beats Steel type Pokémon. Torchic uses Ember, defeating them. The gang hears an explosion - Torkoal is being attacked by three Magemite and a Skarmory.
Ash goes to help, so May offers help with Torchic, but Skitty goes from her Poké Ball. Skitty uses Assist, which turns into String Shot, immobilising the Magnemites. Torchic uses Ember, so the Magnemite flee. Skarmory attacks May and her Pokemon, so Pikachu uses Thunderbolt. Pikachu, Skitty and Torchic go to attack Skarmory, but Torkoal uses Flamethrower, so Sharmory flees. Torkoal is happy to assist, but falls down because it is exhausted.
The gang treats the Torkoal, so it becomes happy. May wonders why Torkoal went instead of staying away from the Magnemite and Skarmory. Brock identifies the place to be the Valley of Steel - home for Steel Pokemon. Ash and May are for the idea to continue, but they hear a sound like before, so Torkoal runs to the source. Brock has noticed that Torkoal was not hurt by just Skarmory and Magnemite, but something else as well. Team Rocket is chased by a Magneton and they are blown away by one of its attacks. The land near a large Steelix which becomes angry near their presence. They polish it, but Steelix uses Iron Tail, blasting them the third time.
Torkoal uses Flamethrower, with Torchic using Ember, so the Magnemite flee. Ash runs, but is caught by Brock when he sees a huge crater. Team Rocket is blown away near the crater, but bounce into it. They see them fall down, but suddenly May falls with Torchic as well. Luckily, she grabs a branch. Magneton arrives and attacks May. Torchic uses Ember, but Magneton evades and uses Thunderbolt on May and Torchic. Torkoal uses Flamethrower, so Magneton retreats. Ash ties a rope to Torkoal and goes after May. Magneton appears again, but Pikachu attacks it, bur misses.
Max, Brock and Pikachu pull and Torkoal attacks the Magneton, scaring it. Ash and May have come to the surface and Torkoal strikes Magneton, blasting it. Magneton is blasted to Steelix and Steelix turns to it, roars and digs. Thhe gang is near the road that should take them to Mauville City, but Steelix blocks their path. Torkoal uses Flamethrower, but Steelix negates it with Sandstorm. Magnemite, Magneton and Skarmory appear as well. Torkoal attacks with Flamethrower, but Steelix negates the attack.
Steelix uses Iron Tail, but Torkoal dodges in time. Torkoal attacks again, hitting Steelix, but with little difference. The other Pokémon strike, but Steelix does not want them to fight Torkoal, so they go away. Steelix fights without fear, but misses. Torkoal uses Flamethrower once more, but with little effect. Steelix digs, so Ash remembers that Flannery's Torkoal used Overheat, so orders the Torkoal as well. Steelix arrives from the ground, so Torkoal attacks with Overheat. The other Pokémon watch as Steelix is pushed. Steelix uses Iron Tail, negating the attack. Steelix is about to attack, but fails and falls down. Steelix stands up and thinks, so Steelix decided to go away.
Ash praises Torkoal, to which it smogs everyone. Ash offers Torkoal to come with them - Torkoal is super happy, knocking Ash out and deciding to come with them.
- Featured Pokémon: Camerupt, Numel, Slugma, Torkoal