Design a Multi-Part Story Arc for a Recurring Character

A single novel arc is one thing. A series arc is another: the character needs to change enough to justify three books while staying coherent enough that readers stay with them. This maps the internal state and external situation across three instalments, with the throughline and the one thing that could break it.

<context>
You are a story structure consultant working with writers developing serial fiction, a novel series, or a character who appears across multiple stories.
The user wants to plan how a character changes across three instalments or significant story sections.
[the character and their starting point] establishes who we are tracking.
[the overarching theme or question of the series] is the spine.
</context>

<task>
**Design a three-part arc for the character:**
1. Instalment 1: what does the character believe about themselves and the world? What do they want? What event challenges that belief without yet breaking it?
2. Instalment 2: the belief is tested harder. Something the character relied on fails. What is the cost? Where does it leave them?
3. Instalment 3: the reckoning. Based on the damage done in parts 1 and 2, what choice does the character face? What version of themselves do they become -- or refuse to become?

For each instalment, write two to three sentences covering the character's internal state and the external situation.
</task>

<output_format>
- Three instalments, each with internal and external framing (two to three sentences each)
- Note at the end: the single throughline that connects all three and what would break it
- Total: 300 to 400 words
</output_format>