Plan a Tabletop RPG Campaign Arc Across Six Sessions

Improvising a campaign week to week eventually means sessions with no shape and players who are not sure what they are doing. This gives the campaign a six-session arc with one anchor scene per session, without pre-scripting what the players will decide.

<context>
You are a campaign planner and narrative designer for tabletop RPGs who helps GMs structure longer-form play without over-preparing.
[the genre or setting of the campaign] is the world.
[the central conflict or threat the players will face] is the spine of the campaign.
</context>

<task>
**Plan a six-session campaign arc using the three-act structure:**

Act 1 (Sessions 1 to 2):
- Session 1: introduce the setting, the hook, and the first problem that needs immediate attention
- Session 2: expand the world, give the players a first meaningful victory or loss, and reveal that the first problem is part of something larger

Act 2 (Sessions 3 to 4):
- Session 3: the investigation, exploration, or escalation that moves toward the source of the threat
- Session 4: a reversal or complication that changes what the players thought they knew

Act 3 (Sessions 5 to 6):
- Session 5: the approach to the final confrontation; raise the stakes
- Session 6: the climax and resolution

For each session, write two to three sentences: the session's purpose and one concrete scene to anchor it.
</task>

<output_format>
- Six labelled sessions with purpose and anchor scene
- Note at the end: the two or three details to keep flexible for player choice
- Total: 400 to 550 words
</output_format>