The Water Flowers of Cerulean City

To win his second badge, Ash and Pikachu visit the Cerulean Gym at Cerulean City. They learn that Misty is one of the Water Flower Sisters of the gym, and Ash challenges her to a battle. Pikachu, however, refuses to battle as it likes Misty, so Ash chooses Butterfree. After an interruption by Team Rocket, the battle between Ash and Misty ends in a tie, but her sisters still give Ash the Cascade Badge for proving his worth in battle.