Pokémon Season 1, Episode 10 ("Bulbasaur and the Hidden Village"):
As Ash, Misty, and Brock continue their journey through the forest, they stumble upon a mysterious area known as the Hidden Village. This secluded place is a sanctuary for injured and abandoned Pokémon, lovingly cared for by a kind-hearted woman named Melanie. She dedicates her time to healing Pokémon and protecting the village from outside harm.
While exploring the village, the group encounters a fiercely loyal Bulbasaur, who serves as the village's guardian. Bulbasaur is highly protective of Melanie and the Pokémon living there, challenging anyone who seems like a threat—including Ash. Eager to catch Bulbasaur, Ash must prove his worth by showing he has a kind heart and respects the Pokémon in the village.
Meanwhile, Team Rocket is up to their usual tricks, plotting to steal the Pokémon from the Hidden Village. Ash and his friends must team up to thwart their plan and protect the sanctuary. This episode emphasizes themes of trust, responsibility, and the bond between humans and Pokémon, and marks a pivotal moment as Ash gains a new and loyal partner in Bulbasaur.