Dotchi NO! Dotchi NO! Dotchi Dotchi Dotchi NO! Come on, haven't they had enough of this song yet. Now they are incorporating the idea into the actual episode. Sounds like this episode maybe similar to the Duplica episode.
This episode ended up being quite funny near the beginning when all the main characters Pokemon were being copied. As far as the plot for the episode, it was predictable and there really wasn't much to it.