Continuing from the last episode, Lucario is trying to attack Ash and his friends. Riley blocks it using his Aura and comments that he and his Lucario are Aura Guardians in training. After Lucario gets shocked by Pikachu's Thunderbolt, it runs away to the source of the waves, which is a machine that Team Galactic had made.
Lucario faints after a battle with Mars, so Ash and his friends go to help. While jumping over a big hole, Piplup accidentally falls in. Dawn discovers this is the hole where Barry and Team Rocket are. Dawn tries helping them up from the hole when a Steelix appears, making Dawn fall in as well, and attacks them. Riley goes back to help them, while Ash battles with Mars and destroys the machine allowing Team Galactic to scan only 60% of Mt. Coronet in their search for the Spear Pillar. Mars is defeated, but escapes with the Spear Key and informs them that she has installed bombs in the ruins, and will blow it up at any second. She then gets off the island in a helicopter. Ash then uses Chimchar to use Dig to get everybody escape the hole, but the ground is too hard, causing it to be recalled. Ash informs every one of this causing James to cry with Mime Jr.. Carnivine watches James crying and then learns Vine Whip, and uses its new move to help everyone escape the hole.
Riley says that he and Lucario would try something to disarm the bomb and tells the others to run as far as they can. When Riley and Lucario find the bombs, they attempt to take it off, but can't. Mars then detonates the bombs but there is no explosion. Riley and Lucario had used an Aura Bubble to trap an explosion in it. They then send it to the sky and the island is safe. Professor Carolina arrives and studies the stones Team Galactic had left and asks Riley to help her study the island's mysterious connection with the Veilstone City meteorites.
Back at Team Galactic Head Quarters, Mars apologizes to Cyrus for her failure in destroying Iron Island. Cyrus tells her it's only a temporary setback, and places Saturn in charge of excavating the Spear Pillar. Even with only a 60% scan, Team Galactic have still made headway in their search for the Spear Pillar and their quest for the ability to control Sinnoh space-time will continue...
- Professor Oak's Pokémon lecture: Skarmory
- Music from Lucario and the Mystery of Mew is used as background music. In the dub, music from Pokémon Heroes is also used.
- The way Carnivine learned Vine Whip is somewhat similar to how Arbok and Weezing evolved.
- This episode marks the second time in the anime that one of Team Rocket's Pokémon is seen learning a new move.
- The first was James's Cacnea in Once There Were Greenfields. Both of them are also James's Pokémon.
- The ruins discovered by Team Galactic have the same name as a real in-game location in Platinum.
- Team Rocket doesn't blast off or recite their motto in this episode.