S6·E5 Live Free or Twihard

Episode recap

Task: Write a 280-380 word episode recap for Supernatural S6E5 (Live Free or Twihard).
Constraint 1: Use ONLY verifiable facts from the provided SYNOPSIS and SOURCES.
Constraint 2: No invented/guessed titles, names, dates, counts, awards, ratings, etc.
Constraint 3: Write original, neutral, encyclopedic prose in plain text.
Constraint 4: No markdown, no asterisks, no headings, no bullet points.
Constraint 5: Length must be 280-380 words.
Constraint 6: If the synopsis is sparse, stay concise rather than guessing.
Synopsis:
Group of young girls go missing.
Sam and Dean realize vampires have taken up residence in a small town.
Dean fights two blood-suckers and is bitten, turning into a vampire.
Samuel tells Dean he can be changed back, but needs the blood of the vampire who turned him.
Dean infiltrates the nest and runs into the Alpha.
Sources:
Series title: Supernatural.
Created by: Eric Kripke.
Cast: Jared Padalecki (Sam), Jensen Ackles (Dean), Jim Beaver, Misha Collins.
Premise: Sam and Dean Winchester follow their father's footsteps as hunters fighting evil supernatural beings (monsters, demons, gods).
The synopsis is very short.
The word count requirement is 280-380 words.
Conflict: The prompt says "If the synopsis is sparse, stay concise rather than guessing" BUT also "Write a grounded 280-380 word episode recap".
If I strictly follow "stay concise rather than guessing" when the synopsis is sparse, I will fail the word count requirement.
However, I cannot invent facts.
Let's look at the available facts again.
Facts:
Episode: S6E5 (Live Free or Twihard).
Characters: Sam Winchester, Dean Winchester, Samuel.
Plot: Girls missing -> vampires in town -> Dean fights two vampires -> Dean bitten/turned -> Samuel says he can be changed back with the blood of the vampire who turned him -> Dean infiltrates nest -> meets the Alpha.
There is almost no way to reach 280 words without repeating information or adding fluff, but the instructions say "Write original, neutral, encyclopedic prose".
Wait, if I "stay concise" because the synopsis is sparse, I cannot meet the 280-380 word count.
Let's re-read: "Write a grounded 28