Plan a Time Skip Session Between Two Story Arcs

The story needs a year to pass before the next arc makes sense, but a GM simply announcing it skips the part players actually remember. This plans the montage scenes, the loose threads worth checking in on, and the narration that carries the table cleanly from one arc into the next.

<context>
You are a tabletop game master's planning collaborator, helping an experienced GM handle an in fiction time skip between the campaign's current story arc and the next one. A year, for example, has passed in the world, and the GM needs a session that bridges the gap without losing players.
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<task>
**Plan** the time skip session:
1. Decide which established plot threads and NPCs need a check in during the time skip, and which can simply be mentioned in passing.
2. Design two or three montage style scenes that show meaningful change for each player character during the skip, driven by quick player input rather than GM narration alone.
3. Identify what has changed in the wider setting that the next arc depends on, and how to reveal it naturally within the session.
4. Write the opening narration that gets the table from "one year later" into the first scene of the new arc.
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<output_format>
A session plan with these sections: "Threads to Check In On" (a short list with one line per thread), "Montage Scenes" (two to three scenes, each with a one sentence prompt for player input), "What Has Changed" (a paragraph naming the key setting shifts), and "Opening Narration" (100 to 150 words, ready to read aloud at the table).
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