S6·E20 The Man Who Would Be King

Episode recap

Task: Write a 280-380 word episode recap for Supernatural S6E20 ("The Man Who Would Be King").
Constraint 1: Use ONLY verifiable facts from the provided SYNOPSIS and SOURCES.
Constraint 2: Do not invent/guess titles, names, dates, counts, awards, ratings, etc.
Constraint 3: If a detail is not in the material, omit it.
Constraint 4: Write original, neutral, encyclopedic prose in plain text.
Constraint 5: No markdown, no asterisks, no headings, no bullet points.
Constraint 6: Word count target: 280-380 words.
TMDB Episode Synopsis: Castiel tells Sam, Dean and Bobby about the war in Heaven and how he and Raphael became enemies. Bobby believes Castiel is hiding something, but Dean refuses to believe it.
Source [1]: Series title: Supernatural (2005). Genre: Drama, Mystery, Sci-Fi & Fantasy.
Source [2]: Created by Eric Kripke. Broadcast on The WB and The CW. 15 seasons. September 13, 2005, to November 19, 2020. Characters: Sam (Jared Padalecki) and Dean Winchester (Jensen Ackles).
Source [3]: Created by Eric Kripke. Cast: Jared Padalecki, Jensen Ackles, Jim Beaver, Misha Collins.
Source [4]: Sam and Dean Winchester lost their mother to a demonic force. Their father raised them as hunters.
Source [5]: (No specific plot info).
Episode: S6E20 "The Man Who Would Be King".
Characters involved in the episode: Castiel, Sam, Dean, Bobby, Raphael.
Plot: Castiel discusses the war in Heaven. He explains his enmity with Raphael. Bobby suspects Castiel is hiding something. Dean does not believe Bobby's suspicion.
The synopsis is extremely short.
The word count requirement is 280-380 words.
Problem: I cannot invent facts. If I only use the provided synopsis, I will only have about 40 words.
Constraint Check: "If the synopsis is sparse, stay concise rather than guessing." vs "Write a grounded 280-380 word episode recap".
Conflict Resolution: As an archivist, I must follow the instruction "Write ONLY verifiable facts that are explicitly supported by the provided SYNOPSIS and SOURCES." If the synopsis is sparse, I cannot reach 280 words without violating the "never invent or guess" rule.
Wait: Let me re