Episode 173
With Max and Meowth taken by Deoxys, Ash and the others head back to the Pokémon Center to devise a plan. Solana manages to fix their Pokéballs and so they head out in search of their friends. In Deoxys' world, it explains to Max (through Meowth) that it is very lonely and confused. However, the geometric imbalance is starting to create Chaos in the world, this pain causes Deoxys to start attacking everybody. Their only hope is for Solana to use the Capture Styler on Deoxys, but it only works when Deoxys is in normal form. Now the others must battle to save themselves from Deoxys and wait patiently for the right time to capture it.
Aired 13/04/2006EP 173 - Episode 173
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)