Episode 167
In a dark alley three kids come face to face with the mysterious "Red Lighting". One kid sends out his Poliwag only to have it beaten and scribbled on. Then, Ash and the others arrive in the same city. Nurse Joy tells them of Red Lighting and how he is unbeatable. While visiting a park, May's Squirtle runs off and is attacked by Red Lighting and is easily defeated. After following Red Lighting to a house on the top of a skyscraper, they find out it is just a Scizor that belongs to a little girl, however she has no plans to stop her little plan. Now Ash decides to stop her for good.
Aired 02/03/2006EP 167 - Episode 167
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)