On this episode, the Elementario girls are not in sync and got noticed by the staff. Later, they accidentally triggered the castle's defense system and have to work together to stop it.
Sweet! I was actually waiting for the Elementario girls to have their own main plot. It was quite nice to learn more about their personalities (especially on their strengths and weaknesses) and I have to point out that their singing was pretty cool. Although surprisingly, the voice actresses of the fair girls actually did the singing after I did some digging. Now what's going to be the next plot? I definitely can't wait to find out as usual. Overall, awesome Elementario girls plot.
Conclusion: Awesome Elementario girls plot.