Arcane: Season 2

Season overview

Role: Meticulous television and film archivist.
Task: Produce a JSON object for "Arcane" Season 2.
Keys: overview (160-220 words summary), primer (array of exactly 4 concise bullet points).
Constraints: Use ONLY provided synopsis and sources. No invented facts. No markdown. No asterisks. No headings. No bullet points (in the text, though the primer is an array). Output valid JSON only.
Source Material:
TMDB Synopsis: Alliances are forged, allegiances are smashed and fresh dangers emerge as the battle between Piltover and Zaun inspires both glory and heartbreak.
Source 1: Overview snippet: "Amid the stark discord of twin cities Piltover and Zaun, two sisters figh"
Source 2: Cast: Kevin Alejandro, Hailee Steinfeld, Ella Purnell, Katie Leung. Overview: "Amid the stark discord of twin cities Piltover and Zaun, two..."
Source 3: Release date/cast info.
Source 4: Title: "Arcane: League of Legends". Genre: animated steampunk, action-adventure.
Source 5: Genres: Action, Adventure, Animation, Drama, Fantasy, Science-Fiction. Overview: "Amid the stark discord of twin cities Piltover and Zaun, two sisters fight on rival sides of a war between magic technologies and clashing convictions."
Overview (Season 2 narrative arc):
The provided TMDB synopsis for Season 2 says: "Alliances are forged, allegiances are smashed and fresh dangers emerge as the battle between Piltover and Zaun inspires both glory and heartbreak."
Wait, the word count requirement is 160-220 words.
Looking at the sources, the only information specifically about Season 2 is the TMDB synopsis.
The other sources provide context for the series in general (two sisters fighting on rival sides, the discord between Piltover and Zaun, magic technologies, etc.).
If I strictly follow "use ONLY the provided synopsis and sources" and "do not invent plot events or spoilers," I have a problem. The Season 2 synopsis is only one sentence long.
The prompt asks for a "factual 160-220 word summary of this season's narrative arc."
If the source material for Season 2 is only one sentence, I cannot reach 160-220 words without inventing information or repeating the same sentence over and over, which violates "do not invent" and "write original... prose."
However, the prompt says "using ONLY the