Last episode I talked about how I figured that the bulk of the remainder of the series was going to be a rescue arc centered around rescuing Chiffon/Infinity after she was overcome by despair and ran off, but that ended up getting resolved by the end of this episode.
Which is not to say in any way that this episode was bad; on the contrary this episode was very good and well-paced, even the exposition scene from the Elder, which started on the amusing note that everything began on a calm night. Also, Northa's appearance at the end of the episode was very reminiscent to Azula's appearance at the end of Book 1 of Avatar: The Last Airbender.