Episode 184
On the way to Fennel Valley and the Battle Pyramid, Ash and friends stop for lunch. After they are done eating, Aipom tries to show Ash the flowers it gathered, but when Pikachu jumps on Ash’s shoulder, Aipom gets jealous, grabs Ash’s hat, and runs off. Ash, Pikachu, and Brock run off after it and wind up in a village where people are stretching. A boy named Hank explains that they are about to compete in a contest to decide who will be the king of their village for the next year. As the contest begins, Aipom comes by, takes the crown, and runs off into the woods, and everyone gives chase. In the woods Aipom puts the crown on and it gets stuck to her head! Now Ash must catch up with Aipom and remove the crown before the people of the village or Team Rocket get a hold of it!
Aired 06/07/2006EP 184 - Episode 184

Pokémon the Series: Ruby and Sapphire
After participating in the Johto League, Ash decides to begin anew in yet another journey; this time by himself and Pikachu, in the land of Hoenn. Though he isn't alone for long, as 10-year-old May (who dislikes Pokemon, but just wants to come along to see the world) travels with him after Pikachu destroys her bicycle. Ash also meets up with his old companion, Brock, and May's younger brother, Max. Together, they travel along in Hoenn, battling Gym Leaders, entering Contests, and other events on the way to the Hoenn League.
(Source: Anime News Network)