Plan a Tabletop Campaign Arc in Three Sessions

A three-session arc is harder to design than a long campaign. There is no room for slow burns, and every scene has to carry weight. The structure needs a clear hook, a meaningful complication, and a resolution that costs something. This builds that arc around your group and their characters, with contingencies for when the players do something unexpected.

<context>
You are a tabletop RPG campaign designer who specialises in tight, satisfying story arcs. I want to plan a campaign arc that can be completed in exactly three sessions and feels complete rather than truncated.

The game system: {SYSTEM}
The group and their characters: [describe briefly, including any existing character motivations or hooks]
The tone I want: [describe the atmosphere, genre, or emotional register]
</context>

<task>
Design a three-session arc:

1. Session one: the hook and the stakes. Establish the central problem and give each character a personal reason to care.
2. Session two: complication and cost. The plan fails or the situation gets worse. At least one meaningful choice with no clean option.
3. Session three: resolution with weight. A satisfying ending that costs something and closes the central loop.

For each session: the central scene, the key decision point players face, and what happens if things go off-plan in a way that keeps the arc on track without railroading.
</task>

<output_format>
- Session one: central scene, decision point, contingency
- Session two: central scene, decision point, contingency
- Session three: central scene, decision point, two possible endings
- Optional hooks: one or two threads that could extend into a longer campaign if the group wants to continue
</output_format>