Ash and Paul continue their 6-on-6 battle. With both teams fighting extremely hard it could be anyone's match, so Paul calls out his newly evolved Magmortar, hoping it will secure him victory.

Following Ash's victory at the Snowpoint City Gym against the Gym Leader Candice, who should appear out of nowhere but Ash's rival Paul! Asking for a Battle with Candice as well, Paul is told he'll have to wait until the following day. But suddenly Paul's brother Reggie appears, and also - none other than the Kanto Frontier Brain from the Battle Pyramid, Brandon! Knowing that the only challenge Reggie ever made in his career as a Trainer that wasn't successful was when he challenged Brandon, Paul immediately challenges Brandon on the spot, vowing to beat him and ...

Ash and friends arrive at Lake Acuity, the site where Ash and Paul will have their full 6-vs-6 battle. After healing his Pokémon, Ash meets up with Paul and the two begin their long awaited battle. Who will ultimately be victorious?

Ash finally arrives at Snowpoint Gym for his battle with Candice. This gym will be different from his previous gym challenges, with each trainer using 4 Pokémon each. Can Ash defeat Candice and win his seventh badge?

Team Galactic reappears to begin their Red Chain project to achieve Cyrus's goal in capturing the legendary Pokémon of Time and Space, Dialga and Palkia. Their plan was intervened by Looker of the International Police and Team Rocket, thus capturing them. But Meowth of Team Rocket blasts off alone and was saved by Ash, Dawn and Brock. Through Meowth, they came to know about Team Galactic's theme and rescues Looker, James and Jessie, but Team Galactic completes their final plan.

With Oreburgh Gym Leader Roark as referee, Ash starts his 3-on-3 Gym battle against Byron, Canalave's fossil-loving Gym Leader. Byron's first Pokémon is the Steel-and-Psychic Bronzor, so Ash sends out Chimchar, a Fire-type Pokémon. But Bronzor's Ability, Heatproof, helps protect it against Chimchar's Fire attacks, and then it uses Rain Dance to rain on Chimchar's parade! Chimchar refuses to give up, and uses Flame Wheel in a head-on charge against Bronzor's Gyro Ball—the hit knocks out Bronzor, but Chimchar barely manages to stay on its feet!

Some Pokemon hunters attack a Temple and awaken a legendary Pokemon. The Pokemon goes on a rampage. Ash helps Brandon effort to calm the enraged Pokemon.

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 company continue their struggle to stop Team Galactic's latest scheme, which is somehow affecting steel type Pokemon. They learn this is just part of Team Galactic's overall plan.

With all of his Pokémon weak and injured from the battle with Paul, Ash rushes to the Pokémon Center in order to get them healed. Nurse Joy does not, however, have the berry needed to properly heal Monferno. Brock decides to help and heads to Lake Acuity to find it. While at the lake, something strange happens.

As Team Galactic's plan reaches its final stages, Ash, Brock and Dawn along with Cynthia, the Sinnoh Champion race against time to stop Cyrus from carrying out his plan of creating a new world. Will they succeed or will the Sinnoh region as well as the entire Pokémon world fall victim to Cyrus's mad plans?

Pikachu and Piplup get themselves stranded on an island where they discover a Corphish and several Mantykes taking care to a mysterious egg.

Ash gets word that the gym leader has returned. Roark, the gym leader from Oreburg City has come to challenge his father, Byron the Canalave City gym leader. With Roark using Rampardos and Byron using Bastiodon, who will win the battle?

Dawn enters the Chocovine town Pokemon contest and meets a tough trainer named Ursula. Will she win her 4th ribbon?

A Froslass holds Meowth and Piplup captive and will only release them when her friend, a Snowrunt is returned.

The adventurers stay with Dawn's mother as Dawn prepares for the next Pokemon contest. Dawn challenges her mother to a battle.

The young adventurers and Team Rocket encounter a mischievous Togepi.

Lyra and Khoury have joined Ash, Dawn and Brock on their journey across the Sinnoh region. However, while Dawn trains for the Lilypad Town Pokémon contest with her Cyndaquil battling Ash's Grotle (with Piplup stealing Cyndaquil's poffin and getting into a fight), Lyra loses her Marill, which seems to have gone to the Valley Windworks. The group make for the Windworks immediately, but Magnemite appears out of nowhere and attacks. Then, they find Marill in the basement storage room only to get locked in. After a few unsuccessful attempts to open the locked door, Ash and his friends are finally free after Pikachu cancels the lockdown by using Thunderbolt on Team Rocket and restoring power to the Windworks. Having found Lyra's Marill, Ash and his friends are confronted by Team Rocket and their giant Magcargo Cannon, but Pikachu saves the day by using Thunderbolt. (Piplup pushes Cyndaquil to the side an gets into another fight)

A Pokémon scientist creates a love machine which will create a friendship between his water and electric Pokémon (Quagasire and Magnemite) but a flaw in it creates the friendship between the water and electric Pokémon all over that area. Unfortunately, Ash's Pikachu and Dawn's Piplup also comes under this area, thus becoming literally inseparable. The team somehow finds about this machine and helps the scientist to achieve his goal without the machine, thus helping their Pokémon to be free from their trance becoming normal again.

As Dawn prepares for the next contest, the adventurers try to spot a rare Phione. One Phione becomes attracted to one of Dawn's Pokemon.

Ash enters a Poke Ringer contest with Staravia. Paul also enters the competition.

Dawn encounters an Agron and become separated from Ash and Brock. When one of her Pokemon is injured fighting the Agron, she must use everything she's learned to heal her Pokemon

As our heroes continue toward Daybreak Town and Dawn's next Pokémon Contest, they lose their sense of direction in a large forest. Peering into the sky, all of a sudden they see what turns out to be a move called Draco Meteor. The move comes from an Altaria, a Pokémon under the tutelage of an elderly woman who calls herself Grandma Wilma. The team asks if they can watch Grandma Wilma's coaching session with Altaria. Then the whole group is approached by a feisty Gible, which Grandma Wilma says lives in the forest. Gible wants to be able to use Draco Meteor, too, but can't seem to pull it off!

Ash and company meet up with Zoey in Snowpoint City. The Gym Leader convinces Ash to teach a Pokemon class before their battle.

Dawn decides to start training for the next Pokemon Contest with Mamoswine. However, despite overcoming its disobedience, Mamoswine still won't battle. Things turn bad when Mamoswine runs into a forest and Dawn chases after it.