Ep 28. Dewpider Ascending!

In Pokemon the Series season 21 episode 28 titled "Dewpider Ascending!," Ash and his friends find themselves in a mysterious forest filled with spider webs. Ash and Pikachu get trapped in a web, where they encounter a Dewpider. Team Rocket also appears and tries to catch Dewpider but fails.

Dewpider, a water-spider Pokemon, decides to help Ash and Pikachu after they help it. They all set out to find a special web Dewpider needs to make its nest. During their journey, they come across many challenges, including a raging river and an encounter with a Tempestuous Guard. Though things look bleak, they manage to navigate the obstacles with Dewpider's help.

Once they finally find the special web, they encounter Team Rocket once more. However, with the help of the other Pokémon, Ash and his friends are able to defeat them and retrieve the web.

At last, Dewpider is able to create its beautiful nest. Ash and his friends are excited to see Dewpider ascend to its new home. However, their happiness is short-lived when a mysterious Pokemon appears, attacking Dewpider and the others. It's up to Ash and his friends to save the day once again!