S7·E8 Rise of the Numbericons: The Movie

Episode recap

Task: Write a 280-380 word episode recap for Rick and Morty S7E8 (Rise of the Numbericons: The Movie).
Constraints:
Use ONLY verifiable facts from the provided SYNOPSIS and SOURCES.
No invented titles, names, dates, counts, awards, ratings, box-office, or plot points.
If a detail is not in the material, omit it.
Original, neutral, encyclopedic prose.
Plain text only (no markdown, no asterisks, no headings, no bullet points).
Word count target: 280-380 words.
SYNOPSIS: "Our heroes realize that math is hard, but saving the universe is harder."
SOURCES:
[1] TMDB: Series title Rick and Morty (2013). Genres: Animation, Comedy, Sci-Fi & Fantasy, Action & Adventure. Tagline: "Science makes sense, family doesn't."
[2] IMDb: Created by Dan Harmon, Justin Roiland. Cast: Chris Parnell, Spencer Grammer, Sarah Chalke, Justin Roiland. Premise: Fractured domestic lives of a nihilistic mad scientist and his anxious grandson complicated by inter-dimensional misadventures.
[3] TMDB Cast/Crew: Sociopathic genius scientist and timid grandson.
[4] TV Guide: Metascore 84. Years: 2013-2026. 12 seasons. Network: Adult Swim. Genres: Animation, Action & Adventure, Comedy. Awards: 2015 Annie nomination (Best General Audience Animated TV/Broadcast Production); 2014 BTVA Television Voice Acting Award nomination.
[5] Simkl: Genres: Adventure, Animation, Comedy, Science-Fiction. Premise: Alcoholic scientist Rick and overly nervous grandson Morty.
The user wants a recap for S7E8 "Rise of the Numbericons: The Movie".
The only information about this specific episode is the synopsis: "Our heroes realize that math is hard, but saving the universe is harder."
The sources provide general information about the series, creators, cast, and genres.
The constraint "If the synopsis is sparse, stay concise rather than guessing" is critical.
The constraint "Write a grounded 280-380 word episode recap" is at odds with the fact that the synopsis is only one sentence.
If I only use the synopsis, I cannot reach 280 words without violating the "never invent or guess" rule.
However, I can incorporate the series context provided in the sources to build a professional, encyclopedic entry about the episode within the context of the show.
*Attempt 1 (Mental Outline):