Fen helps Eliot (Hale Appleman) and Margo (Summer Bishil) complete the sixth key quest with a stop at their faux daughter's current place of employment: an animal bar.
When the fight for the sixth key becomes a fight for the rule of Fillory, Fen (Brittany Curran) pitches in, along with Margo (Summer Bishil), and Fray (Madeleine Arthur), to help Eliot's royal compaign.
With the new Penny sticking around, Julia and Kady team up in an attempt to locate and contact Reynard about what's hiding in the place where supposedly only Gods can go.
Margo works with the rest of their inner circle to figure out how to help elect Eliot as King of Fillory despite the work she put in on her own to help save the kingdom.
The team figures out how to challenge's Tick's takeover of the throne -- through a democratically held election. But the how of getting Tick and the rest of Fillory to vote is a challenge.
Fen, Margo, and Eliot all stop by a Fillorian barn -- where talking animals and people mix -- to speak to its current bartender and their former daughter Fray about how to coax the Fairy Queen into making a deal.
The Fairy Queen questions the joint efforts of Fillorians and Earth children to win the election from Tick and give her people a proper and safe place to reside for their foreseeable future.
Fen, Margo, Eliot and Fray all lean on each other in order to work out a deal with the Fairy Queen, who is none too eager to give up the quest's seventh and final key to unlocking magic in every world.
Josh: Previously... on "Us." Penny: What? Josh: Just imagine, an montage. A group of fine looking grad students were invited to a secret school for magic, where a bunch of stuff happened that doesn't really matter until they ran into a mysterious figure. An answer to a riddle they didn't even know to ask. Penny: It's you. Josh: Do you want this recap or not?
Zelda: I have heard of the Castle at the End of the World. It was built by the gods but its contents are secret by design. All we mortals know is that we are not meant to know. Alice: Why wouldn't they want you to know what's inside? Zelda: Perhaps it is indeed the lair of a horrifying monster. Or, perhaps they simply enjoy tormenting those of us that dedicate our lives to cataloging information. Alice: Well, whatever their motive, we'd be idiots to go in totally blind. Zelda: Then ask someone who's been inside. A god. I believe your friends have had encounters with them.
