The Dex Can't Help It! (Japanese: ロトム、フォルムチェンジが止まらない！Rotom, Can't Stop the Form Change!) is the 57th episode of the Sun & Moon series, and the 996th episode of the Pokémon anime. It first aired in Japan on January 11, 2018 and in the United States on May 12, 2018.
Spoiler warning: this article may contain major plot or ending details.
There’s big trouble for Rotom Dex when a washing machine is accidentally delivered to Professor Kukui’s house. You see, this washing machine contains a Wash Rotom, and an errant jolt from Pikachu zaps the two Rotom into each other’s devices! Ash can’t figure out why the Rotom inside his Pokédex is suddenly acting strangely, and when the delivery person takes the washing machine away (with Rotom Dex still inside it), Rotom Dex goes on a frantic quest to return to its proper home.
Plot
This plot summary is incomplete. Please feel free to edit this plot summary to add missing sections and complete it.
Major events
For a list of all major events in the anime, please see the history page.
