S13·E7 Stewie, Chris & Brian's Excellent Adventure

Episode recap

Task: Write a 280-380 word episode recap for Family Guy S13E7 ("Stewie, Chris & Brian's Excellent Adventure").
Constraint 1 (Role): Meticulous television and film archivist.
Constraint 2 (Content): Write ONLY verifiable facts explicitly supported by the SYNOPSIS and SOURCES.
Constraint 3 (Negative Constraint): Never invent/guess titles, names, dates, counts, awards, ratings, box-office, viewership, or plot points. Omit details not in the material.
Constraint 4 (Style): Original, neutral, encyclopedic prose in plain text. No markdown, no asterisks, no headings, no bullet points.
Constraint 5 (Length): 280-380 words.
Synopsis: To help Chris ace his ninth grade history class, Stewie and Brian employ the time travel machine for educational purposes. Not surprisingly, all three get stuck in the past.
Sources:
[1] TMDB: General info.
[2] IMDb: Cast/crew info.
[3] TV Guide: Series info (1999-2026, 27 seasons, Fox Network, Animation, Comedy, TV-14).
[4] TMDB Cast: Character descriptions (Peter, Lois, Stewie, Meg).
[5] Wikipedia: Seth MacFarlane voices Peter, Stewie, Brian, and Glenn Quagmire.
Episode Title: Stewie, Chris & Brian's Excellent Adventure.
Episode Number: Season 13, Episode 7.
Plot: Stewie and Brian use a time travel machine to help Chris ace his ninth grade history class. All three characters (Stewie, Brian, and Chris) end up stuck in the past.
Characters involved: Chris, Stewie, Brian.
Series Context: Family Guy is an American animated sitcom on the Fox Network. It is rated TV-14.
The synopsis is extremely brief.
The word count requirement is 280-380 words.
Problem: If I only use the provided facts, I cannot reach 280 words without repeating myself or adding fluff, which violates the "neutral, encyclopedic prose" and "never invent" rules.
Constraint Check: "If the synopsis is sparse, stay concise rather than guessing."
Conflict: The user asks for 280-380 words, but the provided material only contains about 40 words of actual plot content.
Strategy: I must expand on the series context provided in the sources to reach the word count, while strictly adhering to the "verifiable facts" rule. I cannot invent plot details to fill space.