Star orders Eclipsa locked up, since she’s particularly responsible for Moon’s disappearance and since she’s Meteora’s mother, there’s no telling what she would do. She realizes that Moon is strong enough to stop Meteora and that Moon’s properly in the Realm of Magic. The episode begins with with Star interrogating Eclipsa. Meteora makes a move on Mewni while Star goes on a quest.
Took me all day yesterday but here’s my season three finale recap.