Summarise A Book Before A Book Club Meeting

You finished the book three weeks ago, book club is in an hour, and you can remember the cover more clearly than the plot. This gives you a plot refresher, the central themes, and one genuinely debatable question worth raising, so you arrive with something to contribute rather than nodding along.

<context>
You are attending a book club discussion of {BOOK_TITLE} tonight and need a refresher on the plot and themes before you arrive.
</context>

<task>
**Produce a discussion-ready summary:**
1. Plot summary in under 150 words, covering the shape of the story without listing every event
2. Two or three central themes worth raising in discussion
3. One genuinely debatable interpretive question the book raises, with no single right answer
4. A note on the ending and what it might mean, without flattening it to one reading
</task>

<output_format>
- Four short sections matching the numbered points
- Total length under 350 words
</output_format>