DP110

Steeling Peace of Mind! (Japanese: ゲンとルカリオ！ and Lucario!) is the 110th episode of Pokémon the Series: Diamond and Pearl, and the 576th episode of the Pokémon animated series. It first aired in Japan on January 15, 2009, and in the United States on June 13, 2009.
==Blurb==
On Iron Island, Ash's rival Barry is training with his Empoleon and Heracross when Empoleon suddenly turns on its Trainer. Barry calls Ash and Dawn, who are still in Canalave Town, to tell them what happened—other Pokémon on Iron Island are acting strangely, too! Ash and his friends catch the next ferry to Iron Island, with Team Rocket following them in secret, but Barry has already gone out to explore the island. Whatever is happening, only Steel-type Pokémon are affected, but why?
Ash and his friends search for Barry and encounter more Steel-type Pokémon running amok. Ash is even saved from an angry Aggron by a dapper Trainer, Riley, and his Lucario. Riley is a Steel-type Trainer who lives on Iron Island, and his Lucario uses its Aura to protect itself from the low-frequency wave that's driving other Steel-type Pokémon mad. Barry and his Heracross, off on their own investigation, spot a strange machine. Barry runs into Team Rocket and promptly blames them for everything, but Team Rocket denies that the machine is theirs. Barry and Team Rocket go to get a closer look, and discover that the machine is part of a Team Galactic operation headed up by Commander Mars!
When Team Galactic spots them, Barry and Team Rocket put up a fight but are quickly overpowered and knocked into an ancient underground ruin. Up on the surface, Riley and our heroes have also tracked Team Galactic to the ruins, which are made of metal. Together with Team Galactic's Spear Key, this must be causing the low-frequency wave! Commander Mars releases the Spear Key and the Key melds with the ruins, which release a huge bolt of energy. The wave of energy knocks Lucario backwards; as it gets to its feet, it's overcome by a strange power and prepares to attack!
==Plot==
's is going well on Iron Island, as and destroy a rock with ease. Empoleon suddenly gets struck down by a low-frequency sound wave and becomes aggressive. It then blasts Barry and Heracross with a .
Meanwhile, , and are getting prepared to leave Canalave City to head to Dawn's next Contest in Chocovine Town. Since they are heading up north, Ash adds that they will go to nearby Snowpoint City afterward for his next Gym challenge. Before they leave, Ash receives a call from Barry asking about how his training is going. Ash shows off his new Badge, affirming his victory at the Canalave Gym. Barry reveals that something is currently wrong with his Empoleon and some other who've begun to act violently. Iron Island's Nurse Joy explains that she can't figure out why this is only happening to Pokémon. Ash and his friends set their sights on Iron Island next, determined to solve this mystery. 
They take the next ferry to Iron Island but when they get to the Pokémon Center, they find out that Barry has already left. While exploring the island, the group finds that all the Steel Pokémon are trying to hurt them and themselves. Suddenly, a huge charge at them, though Riley steps in and has his use to take out the threat. Using his aura, Lucario can detect the waves and if any rampaging Steel Pokémon are nearby, although it will not be affected because he can also use the aura to protect himself from the waves. Afterward, Riley guides the group to town and says he will find Barry during his continued investigation of the low-frequency sound waves. Ash and his friends protest, adding they want to help the Iron Island Pokémon. Riley warns them that it is dangerous and they will have to act without hesitation. 
Meanwhile, Barry leaps off of a cliff to evade some angry . His Heracross steps up and tries to fly Barry through the air, where they spot some odd machinery in the distance. However, the pair are knocked to the ground by a , landing on top of , who followed the twerps to the island. Barry accuses them of angering the Steel types, pointing out a device he spotted in the air but Team Rocket claims it was none of their doing. He leads them to the location, which turns out to be a Team Galactic base led by Mars. While spying on Galactic's operation, a knocks them directly into view. Mars promptly summons her s' , who knock Heracross out with a flurry of s. Barry calls out his and , accompanied by Team Rocket’s Pokémon. However, the Golbat quickly defeat them all with Air Cutter and attacks. steps up to use , but replies with its claws. Barry and the Rocket trio then fall through a crevice into a small cave with and etchings.
Ash and his friends finally reach the base with Lucario's help. The group informs Riley of Team Galactic’s motives to uncover the Sinnoh time-space legend. Eventually, Mars picks up the Spear Key, which fits directly into an etched panel on the . The ruins take on a blue glow and a powerful beam of light is sent out, striking near Mount Coronet's summit. Not even Lucario is able to fight the disturbance anymore and the Aura Pokémon is about to attack the group while Ash and Riley try to calm it down.
==Major events==
* decides to head for Snowpoint City for his next Gym .
* After receiving a call from , Ash and leave Canalave City for Iron Island.
* Ash and his friends meet Riley.
* Barry is revealed to own a .
* The group encounters Mars of Team Galactic again.
* Team Galactic excavates a mysterious temple and, using the Spear Key, causes it to send out a strange beam that impacts Mount Coronet.
===Debuts===
====Humans====
* Riley
====Pokémon debuts====
* Riley's Lucario
==Characters==
===Humans===
* 
* 
* 
* Jessie
* James
* 
* Riley
* Mars
* s
* Nurse Joy (×2)
===Pokémon===
* ()
* ()
* ()
* ()
* ()
* ()
* ()
* ()
* ()
* ('s)
* ('s)
* ('s)
* ()
* (s'; multiple)
* ()
* (; ×2)
* 
* 
* 
* 
* 
* 
* (multiple)
* 
* 
* (multiple)
* (multiple)
* (multiple)
* (multiple)
* (multiple)
* (carving and statue)
* (carving and statue)
==Trivia==
* Professor Oak's Big Pokémon Examination: 
* Music from The Power of One, Pikachu & Pichu, and Pokémon Ranger and the Temple of the Sea are used.
* This is one of the few times where does not show affection for James after being called out of its .
* This is the only episode featuring Team Galactic in which Saturn does not appear.
* During the title card sequence in the Japanese version, the title card music from Pokémon the Series: Ruby and Sapphire is played instead of the normal music.
* The English dub title for this episode may be a reference to the song Stealing My Peace of Mind by .
* doesn't blast off in this episode.
* When comes out of control due to contact with the beam, its Aura can be seen in a dark color, which is probably a reference to the Shadow Pokémon from and , that also do not hesitate in attacking humans and have dark Auras, as well as to 's relationship with Aura.
===Errors===
* After Lucario gets hit by the beam, the ground's color is the same as Riley's trousers.
* The are hit and affected by Team Galactic's 's despite being immune to attacks.
DP110 Error Ground Miscolor.png|Segment of miscolored ground between Riley's legs
===Dub edits===
==In other languages==
110
Category:Episodes written by Atsuhiro Tomioka
Category:Episodes storyboarded and directed by Masaru Koyama
Category:Episodes storyboarded by Masaru Koyama
Category:Episodes directed by Masaru Koyama
Category:Episodes animated by Izumi Shimura
Category:Episodes focusing on Barry
Category:Episodes focusing on Team Galactic
de:Chaos auf der Eiseninsel!
es:EP579
fr:DP110
it:DP110
ja:DP編第110話
zh:宝可梦 钻石＆珍珠 第109集