Pokemon Season 1 Episode 5 Episode Title:Showdown in Pewter City.Episode Description:Ash and Misty finally reach Pewter City and meets a man who sells rocks. He brings them to the Pokémon Center and Ash heals his Pokémon. Ash is ready to challenge the Pewter City Gym Leader, Brock, for his first Badge, but loses to Brock. The man he met earlier takes Ash and Pikachu to a watermill to make Pikachu stronger. Then, Ash battles Brock again. Pikachu Thunderbolts the whole field. When Ash is about to lose again, Brock stops the battle. Then, a fire broke out and water came down. Ash was going to defeat Brock when Brock's siblings stop him. Ash leaves the Gym but Brock catches up to him and gives Ash the Boulder Badge. The mysterious man from earlier turns out to be Brock's father and takes over the Gym for Brock. Brock decides to join Ash on his journey.