S15·E20 Carry On

Episode recap

Task: Write a 280-380 word episode recap for Supernatural S15E20 (Carry On).
Constraint 1: Use ONLY verifiable facts from the provided SYNOPSIS and SOURCES.
Constraint 2: Do not invent/guess titles, names, dates, counts, awards, ratings, box-office, viewership, or plot points.
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.
SYNOPSIS: "It's the final ride for the Winchesters saving people and hunting things."
SOURCE [1]: "Saving people, hunting things, the family business."
SOURCE [2]: Created by Eric Kripke. Starring Jared Padalecki, Jensen Ackles, Jim Beaver, Misha Collins. Two brothers follow their...
SOURCE [3]: American dark fantasy television series created by Eric Kripke. First broadcast on The WB and later The...
SOURCE [5]: 15 seasons available. Journeys of two brothers who face an increasingly...
Episode Title: Carry On (from prompt).
Episode Number: S15E20 (from prompt).
Series Title: Supernatural.
Series Premise: Saving people, hunting things, the family business.
Main Characters: Sam and Dean Winchester (from synopsis/source 1/source 2/source 5).
Cast: Jared Padalecki, Jensen Ackles, Jim Beaver, Misha Collins.
Creator: Eric Kripke.
Genre: Drama, Mystery, Sci-Fi & Fantasy, Dark Fantasy.
Episode Context: It is the final ride for the Winchesters.
The synopsis is extremely brief: "It's the final ride for the Winchesters saving people and hunting things."
The sources provide series-level info but very little episode-level info.
The prompt asks for a 280-380 word recap.
Problem: There is almost no plot information in the provided text to reach 280 words without violating the "never invent or guess" rule.
Self-Correction/Strategy: If I strictly follow "never invent or guess" and "If a detail is not in the provided material, you omit it," and the synopsis only says "It's the final ride for the Winchesters saving people and hunting things," I cannot write 280 words of recap because there is no recap provided. I can