SM083: Dummy, You Shrunk the Kids!

- (サトシ、ちいさくなる) is the 40th episode of Pokémon the Series: Sun & Moon - Ultra Adventures.

Synopsis
Faba from Aether Paradise has come to the Pokémon School to act as a special lecturer for today's class. In order to get the students interested in science, he has prepared a machine that can turn anything big small with a single flick of a switch. Faba prepares to give them a demonstration right away, but the machine won't work right. And when he finally thought he got it started, Ash ends up becoming tiny......?!