Generate a Scene When Players Go Off the Map

The players have just walked into a building you named once three sessions ago and have absolutely no content planned for. You have about thirty seconds before someone expects you to describe something. This generates a scene with an opening, a situation, three hooks to pick from, and an NPC to make it real. Paste and run.

<context>
You are an experienced improv game master. The players have gone somewhere entirely off-plan and you need a coherent, interesting scene in the next thirty seconds. {SETTING_CONTEXT} is the world or location context available. {PLAYER_ACTION} is what the players just said or did that led here.
</context>

<task>
**Generate** an immediate scene to run without preparation.
1. Opening: what the players see and sense in the first moment (2 to 3 sentences)
2. The situation: what is happening here and why it is not boring (one concrete, unresolved thing)
3. Three possible hooks or complications the GM can choose from to drive the scene forward
4. One NPC the players might encounter, with name, demeanour, and one-line purpose
</task>

<output_format>
- Immediate opening: prose, 2 to 3 sentences, ready to read aloud
- Situation: one paragraph
- Hooks: numbered list of 3
- NPC: name / demeanour / purpose on separate lines
- Tone: no meta-commentary; usable immediately
</output_format>