Ep 16. They Might Not Be Giants!

After their battle with Totem Araquanid and their departure from Wela Volcano Park, Ash and his friends come across a group of Diglett who are attempting to evolve. While helping to protect and assist the Diglett, the group learns that the Diglett are convinced that they are much larger than they actually are. This leads to issues when they are forced to confront a group of Alolan Dugtrio who are causing trouble in the nearby town.

As Ash and the gang attempt to stop the Dugtrio, they soon realize that they are up against a much bigger problem than they anticipated. They discover that the Dugtrio are actually giant-sized and that the Diglett's perception of them as small and weak is actually a result of an optical illusion. After some investigation, the group determines that this illusion is being caused by a nearby Nebby, who is unintentionally distorting the perception of reality in the surrounding area.

As Ash and his friends try to come up with a plan to stop the Nebby, Team Rocket arrives on the scene and attempts to capture it. With some quick thinking and clever teamwork, the gang is able to outsmart Team Rocket and prevent them from snatching the Nebby.

In the end, Ash and his friends are able to solve the mystery of the giant Dugtrio and help the Diglett evolve into Dugtrio themselves. They bid farewell to the Diglett and continue on their journey through the Alola region.

Overall, "Pokemon the Series" Season 20 Episode 16 is an exciting and action-packed adventure that sees Ash and his friends facing off against a surprising foe. The episode is filled with engaging characters, thrilling battles, and plenty of humor and excitement. Fans of the series are sure to enjoy this latest installment in Ash's ongoing journey to become a Pokemon Master.