While Ash, Pikachu, and Aipom head toward the Sinnoh region, where lots of new adventures await them, a young Trainer named Dawn is just beginning her own Pokémon journey.

As Dawn sets off to find an injured Pikachu's Trainer, Ash hears the story from Professor Rowan and sets off to find Dawn-and reunites with Brock along the way!

As Ash and Brock finally meet up with Dawn and are reunited with Pikachu, a Trainer named Paul challenges Ash to a battle.

After Team Rocket makes off with Ash's Pikachu once again, a feisty Turtwig appears to rescue Pikachu and later takes a bit of time to warm up to our heroes.

After showing up again seemingly out of nowhere, Paul is pitted against Ash in a series of battles that reflect just how different they are as Trainers and people.

On their way to Jubilife City and Dawn's first Pokémon Contest, Piplup decides to help a group of Pokémon in need.

Our heroes come across a phony Pokémon Gym run by a disguised Team Rocket, who are plotting to steal as many Pokémon as they can!

Our heroes discover a Buneary in the forest on the way to Jubilife City, and Dawn decides she just has to catch it!

When our heroes arrive in Jubilife City for Dawn's first Pokémon Contest, they run into some fake Pokétch peddlers with an evil scheme!

Ash decides to join Dawn in their very first Pokémon Contest, and Dawn finds a new friend and rival in a fellow Coordinator named Zoey!

The Jubilife City Pokémon Contest is in full swing! Can Ash and Dawn make it to the finals? And what will happen if they face each other?

On their way to Oreburgh City, our heroes discover that something is happening to the flying Pokémon who live in the forest, and they decide to investigate.

When our heroes help an injured Nuzleaf, Team Rocket tries to steal it-and ends up nabbing Brock in the process!

When Ash arrives at the Oreburgh Gym for his first Gym battle in the Sinnoh region, he discovers that his rival Paul has beaten him to the challenge!

After Paul's victory at the Oreburgh Gym, it's Ash's turn to face Gym Leader Roark and his powerful Rock-type Pokémon.

When a Team Rocket scheme unleashes ancient Pokémon upon Oreburgh City, our heroes must pitch in to round them up!

Ash is back at the Oreburgh Gym for a rematch with Roark-who has a newly evolved Rampardos on his team! Can our hero win his first Sinnoh Gym badge?

As our heroes travel toward Dawn's next Pokémon Contest in Floaroma Town, she catches an adorable Pachirisu-who might turn out to be more than she can handle!

When our heroes encounter the ruthless Pokémon Hunter J, they are forced into an unusual alliance to deal with the threat!

Our heroes come across two Trainers who are dedicated to their unevolved Pokémon-and must protect them when Team Rocket is determined to steal those Pokémon and make them evolve!

Our heroes come across an unofficial Pokémon Contest in a small village-and after an unusual good deed, Team Rocket's Jessie wants to borrow Ash's Aipom to compete!

On their way to Dawn's next Pokémon Contest in Floaroma Town, our heroes come across a village of Bidoof whose safety is threatened by a rampaging Steelix!

When the elderly Abigail's Pikachu goes missing, Ash's Pikachu reluctantly agrees to fill in until Abigail's niece can locate the missing Pokémon.

Dawn convinces Ash and Brock to join her in a cooking class, where they learn how to make Pokémon snacks called Poffins-and meet the fascinating Pokémon Roserade!

As she prepares for the Pokémon Contest in Floaroma Town, Dawn gets a surprise visit from her childhood friend Kenny!

In the Floaroma Pokémon Contest, Dawn finds herself facing off against not only "Jessilina" but also her old friend Kenny!

On their way to Eterna City, our heroes meet an unusual Nurse Joy who has a family: two little girls who want to be just like their mom!

Our heroes meet twin Trainers who have won 15 Tag Battles in a row-and the boys challenge Ash and Dawn to battle number 16!

In the Eterna Forest, our heroes meet a treasure hunter named Cheryl who's on a mission to discover the Amber Castle, which holds a special Enchanted Honey!

As our heroes help treasure-hunter Cheryl with her quest for the Enchanted Honey, they meet a Trainer named Gardenia who adores Grass-type Pokémon.

Our heroes, along with treasure-hunter Cheryl, discover a mysterious cave that might hold the answers to the Enchanted Honey they've been looking for!

Our heroes discover the Pokémon Dress-Up Contest, a unique event where Pokémon compete by disguising themselves as other kinds of Pokémon!

On their way to Eterna City, our heroes meet up with Dawn's friend and contest rival Zoey-plus an impressive Buizel that Dawn would love to catch!

Our heroes run into Lucian, a member of the Sinnoh region's Elite Four, who agrees to help Dawn train her new friend Buizel.

When our heroes arrive in Eterna City for Ash's next Gym battle, they witness the aftermath of a major theft at the local museum of history!

Ash challenges Gym Leader Gardenia, a Grass-type expert who defeated him in battle when they first met in Eterna Forest! Can he come out on top this time?

When Brock's Pokémon Egg starts to hatch, our heroes make a fateful stop at a run-down Pokémon Center along the Cycling Road.

Our heroes board a steamboat headed to Hearthome City-but when they have to run back into town for supplies, the boat accidentally takes off with their Pokémon!

On their way to Hearthome City, our heroes cross paths with Cynthia, the Champion of the Sinnoh League-and she's battling Ash's rival Paul!

When Dawn runs into an injured Zoey on the way to Hearthome City, she learns about a whole new style of contest that uses two Pokémon at once!

At a Pokémon Training Center, our heroes meet a Pokémon Breeder who's having some difficulty with his powerful but undisciplined Electrike.

Our heroes pass through a mysterious gate and are sent to a strange place where all their dreams seem to be coming true-courtesy of a mischievous Mismagius!

Our heroes rescue a terrified Hippopotas who's gotten stranded on a ledge, and they set off to return their new friend to its herd.

Ash unexpectedly runs into Gary Oak, his old rival from Kanto, and the two Trainers team up to protect a rare Shieldon from Pokémon Hunter J!

When Dawn decides to take a detour to upgrade her Pokétch, our heroes find themselves in a maze of Team Rocket's making!

A Trainer named Mira offers to send our heroes straight to Hearthome City using her Abra's Teleport move, but first she needs them to do her a favor.

A clip show unaired outside of Japan summarizing the important events of the first 47 Diamond and Pearl episodes, including Satoshi's (Ash's) victories over Hyouta (Roark) and Natane (Gardenia), and the introductions of new rivals Shinji (Paul) and Nozomi (Zoey). On their way to Hearthome City, Ash, Dawn and Brock recall their adventures together so far.

It's time for the Hearthome Contest! Dawn faces some stiff competition: her rival Zoey, Pokémon bard Nando, and Team Rocket's Jessie are all determined contenders!

Right on the heels of the Pokémon Contest, Ash, Dawn, and Brock all decide to enter Hearthome City's Tag Battle Competition, where teams of two Trainers face off!

Ash has been paired up with his rival Paul for the Tag Battle Competition-but Paul is pushing his Chimchar way too hard!

The Hearthome City Tag Battle Competition is coming to an exciting conclusion, as all of our heroes are set to face each other in the last few rounds!