S6·E18 Frontierland

Episode recap

Task: Write a 280-380 word episode recap for Supernatural S6E18 (Frontierland).
Constraints:
Use ONLY verifiable facts from the provided SYNOPSIS and SOURCES.
Do not invent/guess titles, names, dates, etc.
If a detail is not in the material, omit it.
Write original, neutral, encyclopedic prose.
Format: Plain text only (no markdown, no asterisks, no headings, no bullet points).
Word count: 280-380 words.
Synopsis: While searching for a way to defeat Eve, Dean stumbles upon Samuel Colt’s journal in the Campbell library. Realizing Samuel might have the answer to their problems, Sam and Dean ask Castiel to send them back in time so they can meet the man himself. While Sam is a bit reluctant to time travel, Dean is beside himself with excitement to return to the Wild, Wild West.
Sources:
[1] General info about Supernatural.
[2] Created by Eric Kripke. Broadcast on The WB and later The CW for 15 seasons (Sept 13, 2005 - Nov 19, 2020). Follows Sam (Jared Padalecki) and Dean (Jensen Ackles).
[3] Created by Eric Kripke. Cast: Jared Padalecki, Jensen Ackles, Jim Beaver, Misha Collins.
[4] Background: Sam and Dean lost mother to demonic force; father raised them as hunters.
Characters: Sam Winchester (Jared Padalecki), Dean Winchester (Jensen Ackles), Castiel (Misha Collins), Samuel Colt, Eve.
Plot:
Searching for a way to defeat Eve.
Dean finds Samuel Colt's journal in the Campbell library.
Sam and Dean believe Samuel might have answers.
They ask Castiel to send them back in time to meet Samuel.
Sam is reluctant about time travel.
Dean is excited to return to the Wild, Wild West.
The synopsis is very short. The word count requirement is 280-380 words.
Problem: The provided synopsis only contains about 65 words of plot. The sources provide series-level information but no additional episode-specific details.
Constraint Check: "If the synopsis is sparse, stay concise rather than guessing." vs "Write a grounded 280-380 word episode recap".
Conflict: I cannot meet the 280-380 word count without inventing details or repeating the same facts excessively, which violates the "never invent or guess" and "write original, neutral, encyclopedic prose