I’m sure it’s obvious at this point, but the over-arching story of Professor Pine’s Astro Camp is the story of Ash and Elgyem. While the last episode focused more on Ash having to gain Elgyem’s trust, this episode was Ash gaining its friendship, and helping it to overcome its issues. Elgyem wasn’t timid simply because it was born that way, it went through a traumatic experience in its life, and this episode was all about exploring and paralleling that experience, which would eventually lead to Elgyem overcoming its fears.
Another aspect of this episode was the subplot with Brenda and Michelle. For now I can say is that it is obvious that something is brewing. Now if you had the feeling that this episode felt incomplete as far as their story goes, you would be right, but remember, we’re in the middle of a multi-episode arc, so things aren’t quite done yet.