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Official Description

If Gary Oak is headed for the Sinnoh region, then Ash Ketchum won’t be far behind! Ready to take on the Sinnoh League, Ash brings along Pikachu and meets up with Brock in Sinnoh, where the pair of Trainers are soon joined by a third—Dawn, a novice Pokémon Coordinator determined to follow in the footsteps of her mother. Both Ash and Dawn struggle with their respective paths, but it’s easy for them to make new friends, gaining new Pokémon like Turtwig and Piplup.

Episode List

Picture	Episode # (Season)	Episode # (Overall)	Episode name (Intl / Japan)	Air dates (Intl / Japan)	Synopsis
	1	E# 465 J# 469	"Following a Maiden's Voyage!" "Tabidachi! Futaba Taun Kara Masago Taun e!!" (旅立ち！フタバタウンからマサゴタウンへ！！) (Setting Off! From Futaba Town to Masago Town!!)	April 20, 2007 September 28, 2006
	2	E# 466 J# 470	"Two Degrees of Separation!" "Pikachū o Sagase! 202-ban Dōro!" (ピカチュウをさがせ！202番道路！) (Find Pikachu! Route 202!)	April 20, 2007 September 28, 2006
	3	E# 467 J# 471	"When Pokémon Worlds Collide!" "Raibaru Batoru! San Tai San!!" (ライバルバトル！三対三！！) (Rival Battle! Three On Three!!)	April 20, 2007 September 28, 2006
	4	E# 468 J# 472	"Dawn of a New Era!" "Potchama Tai Subomī! Hikari Hatsu Batoru!!" (ポッチャマ対スボ ミー！ヒカリ初バトル！！) (Pochama Against Subomie! Hikari's First Battle!!)	June 7, 2007 October 5, 2006
	5	E# 469 J# 473	"Gettin' Twiggy with It!" "Naetoru! Getto da ze!" (ナエトル！ゲットだぜ！) (Naetle! I Got It!)	June 11, 2007 October 19, 2006
	6	E# 470 J# 474	"Different Strokes for Different Blokes!" "Mayoi no Mori! Shinji Futatabi!!" (迷いの森！シンジふたたび！！) (Bewilder Forest! Shinji Returns!!)	June 12, 2007 October 26, 2006
	7	E# 471 J# 475	"Like it or Lup It!" "Potchama Ganbaru!!" (ポッチャマがんばる！！) (Do Your Best, Pochama!!)	June 13, 2007 November 2, 2006
	8	E# 472 J# 476	"Gymbaliar!" "Nazo no Jimu no Guregguru!" (なぞのジムのグレッグル！) (Gureggru of the Mysterious Gym!)	June 14, 2007 November 9, 2006
	9	E# 473 J# 477	"Setting the World on its Buneary!" "Mimiroru to Asobō!?" (ミミロルとあそぼう！？) (Let's Play with Mimirol!?)	June 18, 2007 November 16, 2006
	10	E# 474 J# 478	"Not on My Watch Ya Don't!" "Poketchi Nyūshu Konnan!?" (ポケッチ入手困難！？) (Can't Get the Pokétch!?)	June 19, 2007 November 23, 2006
	11	E# 475 J# 479	"Mounting a Coordinator Assault!" "Hikari! Kontesuto Debyū!!" (ヒカリ！コンテストデビュー！！) (Hikari! Contest Debut!!)	June 20, 2007 December 7, 2006
	12	E# 476 J# 480	"Arrival of a Rival!" "Kontesuto Batoru! Raibaru Taiketsu!!" (コンテストバトル！ ライバル対決！！) (Contest Battle! Rival Showdown!!)	June 21, 2007 December 14, 2006
	13	E# 477 J# 481	"A Staravia Is Born!" "Mukkuru Ganbaru!" (ムックルがんばる！) (Do Your Best, Mukkuru!)	June 25, 2007 December 21, 2006
	14	E# 478 J# 482	"Leave it to Brocko!" "Takeshi ni Omakase!" (タケシにおまかせ！)  (Leave it to Takeshi!)	June 26, 2007 December 21, 2006
	15	E# 479 J# 483	"Shapes of Things to Come!" "Kurogane Jimu! Hyōta Tai Shinji!!" (クロガネジム！ヒョ ウタVSシンジ！！) (Kurogane Gym! Hyouta vs. Shinji!!)	June 27, 2007 January 11, 2007
	16	E# 480 J# 484	"A Gruff Act to Follow!" "Zugaidosu Tai Pikachū!" (ズガイドスVSピカチュウ！)  (Zugaidos vs. Pikachu!)	June 28, 2007 January 18, 2007
	17	E# 481 J# 485	"Wild in the Streets!" "Kodai Pokemon Daishingeki!!" (古代ポケモン大進撃！！) (Big Charge of Ancient Pokémon!!)	July 2, 2007 January 25, 2007
	18	E# 482 J# 486	"O'er the Rampardos We Watched!" "Kurogane Jimu Futatabi! Kessen Ramuparudo!!" (クロガネジムふたた び！決戦ラムパルド！！) (Return to Kurogane Gym! Decisive Battle with Rampard!!)	July 3, 2007 February 1, 2007
	19	E# 483 J# 487	"Twice Smitten, Once Shy!" "Pachirisu Getto de...Daijōbu!?" (パチリスゲットで… 大丈夫！？) (Get Pachirisu... No Need to Worry!?)	July 5, 2007 February 8, 2007
	20	E# 484 J# 488	"Mutiny in the Bounty!" "Pokémon Hantā Jē!" (ポケモンハンターJ！)  (Pokémon Hunter J!)	July 9, 2007 February 22, 2007
	21	E# 485 J# 489	"Ya See We Want an Evolution!" "Saikyō no Koikingu to Mottomo Utsukushī Hinbasu!" (最強のコイキングと 最も美しいヒンバス！)  (The Strongest Koiking and the Most Beautiful Hinbass!)	July 10, 2007 March 1, 2007
	22	E# 486 J# 490	"Borrowing on Bad Faith!" "Pachirisu Tai Eipamu! Kontesuto Batoru!!" (パチリスVSエイパ ム！コンテストバトル！！)  (Pachirisu vs. Eipom! Contest Battle!! )	July 11, 2007 March 8, 2007
	23	E# 487 J# 491	"Faced with Steelix Determination!" "Bakusō Haganēru! Bippa no Mura o Mamore!!" (爆走ハガネール！ ビッパの村を守れ！！) (Roaring Haganeil! Protect the Bipper Village!!)	July 12, 2007 March 15, 2007
	24	E# 488 J# 492	"Cooking Up a Sweet Story!" "Taiketsu! Satoshi Tai Pikachū!?" (対決！サトシ対ピカ チュウ！？) (Showdown! Satoshi Against Pikachu!?)	July 16, 2007 March 29, 2007
	25	E# 489 J# 493	"Oh Do You Know the Poffin Plan!" "Kaiketsu Rozureido to Hana Densetsu!" (怪傑ロズレイドと花 伝説！) (The Gifted Roserade and the Flower Legend!)	September 1, 2007 March 29, 2007
	26	E# 490 J# 494	"Getting the Pre-Contest Titters!" "Pokemon Kontesuto! Sonō Taikai!!" (ポケモンコンテス ト！ソノオ大会！！)  (Pokémon Contest! Sonoo Tournament!!)	September 1, 2007 April 5, 2007
	27	E# 491 J# 495	"Settling a Not-So-Old Score!" "Kessen! Potchama Tai Pottaishi!!" (決戦！ポッチャマVSポッタイシ！！) (Decisive Battle! Pochama vs. Pottaishi!!)	September 8, 2007 April 5, 2007
	28	E# 492 J# 496	"Drifloon on the Wind!" "Fuwante to Kitakaze no Tsukai!" (フワンテと北風の使い！) (Fuwante and the North Wind Messenger!)	September 15, 2007 April 12, 2007
	29	E# 493 J# 497	"The Champ Twins!" "Satoshi to Hikari! Taggu Batoru de Daijōbu!?" (サトシとヒカリ！タッグバトルで大丈夫！？) (Satoshi and Hikari! No Need to Worry in a Tag Battle!?)	September 22, 2007 April 12, 2007
	30	E# 494 J# 498	"Some Enchanted Sweetening!" "Hakutai no Mori! Minomutchi Shinka Sakusen!!" (ハクタイの森！ミノムッチ進化作戦！！) (Hakutai Forest! Minomutchi Evolution Strategy!!)	September 29, 2007 April 19, 2007
	31	E# 495 J# 499	"The Grass-Type is Always Greener!" "Naetoru Tai Naetoru! Supīdo Taiketsu!!" (ナエトル対ナエトル！スピード対決！！) (Naetle Against Naetle! Speed Showdown!!)	October 6, 2007 April 26, 2007
	32	E# 496 J# 500	"An Angry Combeenation!" "Kohaku no Shiro no Bīkuin!" (琥珀の城のビークイン！) (Beequeen of the Amber Castle!)	October 13, 2007 May 3, 2007
	33	E# 497 J# 501	"All Dressed Up with Somewhere to Go!" "Suki Desu! Pokemon Narikiri Taikai!!" (スキです！ポケモンなりきり大会！！) (It's Love! Pokémon Transformation Tournament!!)	October 20, 2007 May 10, 2007
	34	E# 498 J# 502	"Buizel Your Way Out of This!" "Buizeru! Saikyō e no Michi!!" (ブイゼル！最強への道！！) (Buoysel! Road to the Strongest!!)	October 27, 2007 May 17, 2007
	35	E# 499 J# 503	"An Elite Meet and Greet" "Shitennō Goyō to Dōtakun!" (四天王ゴヨウとドータクン！) (Elite Four Goyō and Dotakun!)	November 3, 2007 May 24, 2007
	36	E# 500 J# 504	"A Secret Sphere of Influence" "Shin'ō Jikū Densetsu!" (シンオウ時空伝説！) (Sinnoh's Space-time Legend!)	November 10, 2007 May 31, 2007
	37	E# 501 J# 505	"The Grass Menagerie" "Hakutai Jimu! Tai Natane!!" (ハクタイジム！VSナタネ！！) (Hakutai Gym! Vs. Natane!!)	November 17, 2007\ June 7, 2007
	38	E# 502 J# 506	"One Big Happiny Family" "Bakutan! Saikuringu Rōdo!!" (爆誕！サイクリングロード！！) (Explosive Birth! Cycling Road!!)	November 24, 2007 June 21, 2007
	39	E# 503 J# 507	"Steamboat Willies" "Pikachū no Orusuban!" (ピカチュウのおるすばん！) (Pikachu's Caretaking!)	December 1, 2007 July 5, 2007
	40	E# 504 J# 508	"Top-Down Training" "Chanpion, Shirona Tōjō!!" (チャンピオン・シロナ登場！！) (Champion – Shirona Appears!!)	December 8, 2007 July 19, 2007
	41	E# 505 J# 509	"A Stand Up Sit Down" "Hikari to Nozomi to Daburu Pafōmansu!!" (ヒカリとノゾミとダブルパフォーマンス！！) (Hikari, Nozomi and the Double Performance!!)	December 15, 2007 July 26, 2007
	42	E# 506 J# 510	"The Electrike Company" "Rakurai Kunren Sentā!!" (ラクライ訓練センター！！) (Rakurai Practice Center!!)	December 22, 2007 August 9, 2007
	43	E# 507 J# 511	"Malice in Wonderland!" "Mūmāji! Akumu kara no Dasshutsu!!" (ムウマージ！悪夢からの脱出！！) (Mumage! Escape from the Nightmare!!)	December 29, 2007 August 16, 2007
	44	E# 508 J# 512	"Mass Hip-po-sis!" "Maigo no Hipopotasu o Tasukero!" (迷子のヒポポタスを助けろ！) (Save the Stray Hipopotas!)	January 5, 2008 August 23, 2007
	45	E# 509 J# 513	"Ill-Will Hunting" "Hantā Jē Futatabi! Tatetopusu o Mamore!!" (ハンターJ再び！タテトプスを守れ！！) (Hunter J Returns! Protect Tatetops!!)	January 12, 2008 August 30, 2007
	46	E# 510 J# 514	"A Maze-ing Race!" "Meiro de Shaffuru! Minna de Hassuru!!" (迷路でシャッフル！みんなでハッスル！！) (Shuffle in the Maze! Everyone Hustle!!)	January 19, 2008 September 13, 2007
	47	E# 511 J# 515	"Sandshrew's Locker!" "Miru to Kēshī to Mizu no Soko!" (ミルとケーシィと水 の底！) (Miru, Casey and, Underwater!)	January 26, 2008 September 27, 2007
	E# N/A J# 48	E# N/A J# 516	N/A "Satoshi to Hikari! Aratanaru Bōken ni Mukatte!!" (サトシとヒカリ！新たなる冒険に向かって！！) (Satoshi and Hikari! Head for a New Adventure!!)	N/A September 27, 2007
	E# 48 J# 49	E# 512 J# 517	"Dawn's Early Night!" "Pokemon Kontesto! Yosuga Taikai!!" (ポケモンコンテスト！ヨスガ大会！！) (Pokémon Contest! Yosuga Tournament!!)	January 26, 2008 October 4, 2007
	E# 49 J# 50	E# 513 J# 518	"Tag! We're It...!" "Zen'in Sanka! Taggu Batoru!!" (全員参加！タッグバトル！！) (Everyone Participate! Tag Battle!!)	February 1, 2008 October 4, 2007
	E# 50 J# 51	E# 514 J# 519	"Glory Blaze!" "Hikozaru Tai Zangūsu! Unmei no Batoru!!" (ヒコザルVSザングース！運命のバトル！！) (Hikozaru vs. Zangoose! Destined Battle!!)	February 1, 2008 October 18, 2007
	E# 51 J# 52	E# 515 J# 520	"Smells Like Team Spirit!" "Taggu Batoru! Fainaru!!" (タッグバトル！ファイナル！！) (Tag Battle! Final!!)	February 1, 2008 October 25, 2007

Ash's Travelling Companions

Key Events & Gym Battles

Events of note



Gym battles

Pokemon: Captures, Changes, Encounters & Evolutions

New Pokemon captured by Ash & Other Characters


Pokemon released back into the wild
There were a number of occasions where either Ash or another character released a captured Pokémon back into the wild for one reason or another


Evolution
We see the following Pokémon evolutions take place during this season

TV Broadcasts & Original Airing Dates

Trivia & Facts

DVD & Blu-Ray / Streaming