Season 5, Episode 46 - "Just Add Water"
12 July, 2003
On the way back to New Bark Town, Ash and friends see a poster advertising a Water Gym down the shore. They decide to visit it, and meet the leader, Dorian. When Misty and Dorian have a disagreement about who is the strongest of Misty and her sisters, Misty challenges him to a battle. Ash also challenges him to a battle and he agrees to battle both. Meanwhile, Team Rocket is planning on capturing all of Dorian's Pokémon.
