I know this is an old thread but I couldn't find a better place for this. I've been working my way through the completed episode outlines to get caught up. While I was in there, I pulled out the teaser and tag descriptions and combined them to get a comprehensive view of the frame story (as outlined). I've pasted the results below.
This kind of tool helps me to visualize the story in larger arcs and might be of interest/use to others. If stuff like this is of use it may end up in Nick's SFP Show Bible. I have ideas for other tools to try out later once other more pressing work is complete.
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S4E01: “The Laughter of Morgoth”; Bilbo welcomes Gandalf and Balin at Bag End as they visit on their way to the Lonely Mountain. There is to be a great feast to commemorate the seven-year anniversary of the demise of the dragon. Though they haven’t invited Bilbo to join them, he manages to accompany them (somehow).
S4E02: “The Dispossessed”; Bilbo, Balin, and Gandalf encounter Thorin’s sister Dís on the way to Erebor. She accosts Gandalf, blaming the wizard the death of her sons and brother Later, the concept of were-gild is discussed.
S4E03: “Swords and Councils”; Bilbo is reintroduced to the political and economic situation surrounding Dale and Erebor. In the marketplace they observe signs of tension among the citizenry. Bilbo doesn’t understand why all folk can’t get along and live in peace. Gandalf explains that the tension results in part from the way the subjects perceive their kings.
S4E04: “The Realms of Beleriand”; Bilbo is astonished to see the ongoing renovations of Erebor, already much improved from when he last beheld the Mountain. But tensions rise as Bilbo notices warlike preparations. But just as Gandalf is explaining the history of dwarf-trade with Mirkwood, horns at the gate announce the arrival of Thranduil.
S4E05: “The Feast of Reuniting”; Bilbo attends the first party of the larger celebration and meets Celeborn’s sister. She herself attended the Mereth Aderthad and describes it for him. Bilbo wonders if their own tense reunion of would-be allies will turn out as well. She admits it is possible, but it is clear that she has her doubts.
S4E06: “The Sun Doth Still Shine”; Dain asks Gandalf to study an ancient document and Bilbo takes an interest since moon letters are involved. This particularly special Durin’s Day illuminates a crafting technique long thought lost but the truth could prove dangerous, re-opening old wounds and further complicating tensions between Dain and Thranduil.
S4E07: “Aranruth, the King’s Ire”; Uncomfortable keeping the secret, Bilbo reveals Gandalf’s discovery: an ancient design for dragon-proof doors,
which reminds the dwarves they were never paid in full by the Wood-elves. The resulting confrontation escalates until Bilbo reminds Balin they supposed to be commemorating an alliance, not starting a war.
S4E08: “The Spell of Bottomless Dread”; Dis confronts Dain in Erebor and the conversation devolves into a shouting match. Dis’ family sacrificed much for the throne on which Dain sits. Later, Dain summons Dis to a large workshop, it is his gift to her where she can forge a new legacy, he offers his son Thorin (later Stonehelm) as her first student.
S4E09: “The Glorious Battle”; Brooding over grievances and debts, Dain climbs Ravenhill to visit Roac. They discuss Dain’s pointed absence from the celebration after the incident with Thranduil. Roac observes that nothing silence solves nothing. Bard is wary when Dain returns to Dale, but now party clothes Dain appears to have come in good faith.
S4E10: “Builded From Sand”; Dain and Bard cannot understand Thranduil’s ire, but Bilbo knows a thing or two about Elven-kings by now. After learning about the rediscovered technique for making dragon-proof doors, Bilbo realizes that the protective spell engraved into the dwarf-made doors is written in Quenya, the ancient tongue of the Noldor.
S4E11: “Devices of the Heart”; Dain gives Thranduil a tour, but he is underwhelmed with the dwarves’ post-desolation restoration wo. Hoping to change his mind, Dain invites Thraduil into Erebor to see their underground work. Thranduil is so impressed with the dwarf mines that he changes his policy and allows the dwarves to traffic through Mirkwood.
S4E12: “Mighty Kings”; Bilbo and Gandalf accompany Balin on a visit to Dis' workshop. Balin places an order for some armor and speaks of his plan to reclaim Moria. Dwalin has finished the dragon-proof doors and joins their conversation. Bilbo later returns to give Dis a copy of his book. Gimli is one of the students.
S4E13: “The Long Peace”; The new dragon-proof doors are installed at the front gates of Erebor amid a formal ribbon-cutting ceremony. Dain as King under the Mountain restored expresses confidence that they'll never be attacked by a dragon. Eventually Bilbo says his farewell to Erebor and begins the long journey back to Bag End.