Pokemon: Season 21, Episode 40

Dummy, You Shrunk the Kids!

Aether Foundation member Faba has returned to the Pokémon School. He has come to show off a machine that will shrink anything, no matter how big. However, the machine malfunctions and Ash, Lillie & Sophocles get shrunk down and due to trouble, get stuck outside. Will Ash & Co. get back to the school and get back to full size?