Pokemon the Series Season 9 Episode 13 Queen of the Serpentine!

Ash, Pikachu, and Brock are walking through a forest filled with strange giant mushrooms. When they see a girl being attacked by a Serperior, they jump to her defense. The girl's name is Cassandra, and she is the queen of the Serperior in the forest. She thanks them for their help and invites them to her kingdom.

Ash and his friends are amazed by the intricate system of tunnels that the Serperior have built. They learn that Cassandra rules over the Serperior with kindness and fairness, but there is a problem. The Seviper in the forest have been attacking the Serperior more frequently, causing tension between the two groups.

Cassandra asks Ash and his friends to help her negotiate a peace treaty with the Seviper. They agree, and they set out to find the Seviper's leader, a huge and powerful Arbok. When they find him, they discover that he is working for Team Rocket.

Team Rocket plans to capture as many Serperior as they can and sell them to the highest bidder. Ash and his friends agree to help Cassandra and the Serperior, and they team up to stop Team Rocket's evil plan.

In the end, Ash and his Pokemon battle fiercely against Team Rocket's Pokemon, while Cassandra and the Serperior take down the armed guards who are trying to capture them. The battle is long and tough, but ultimately Ash and his friends succeed in defeating Team Rocket and saving the Serperior. They return to Cassandra's kingdom as heroes and are welcomed with open arms.

The Seviper and the Serperior finally agree to a peace treaty and come to an understanding with each other. Cassandra thanks Ash and his friends for their help and invites them to stay in her kingdom as honored guests. They accept, and spend the next few days exploring the beautiful tunnels and forests of the Serperior's kingdom.

As the episode ends, Ash and his friends say goodbye to Cassandra and her people, promising to keep in touch and visit again soon. Cassandra watches them go with a smile on her face, knowing that thanks to their help, her kingdom is safe from harm.