This question asks for help generating ideas for a very specific plot. It's an interesting question. It's specific (maybe so specific that it is too localize). It's writing-related. At the same time, it doesn't necessarily advance our goal of being the best site out there for writing-related questions and answers that will come up on search engines as the top answers and be a noted collection of expert advice. It does, however, help the author and could generate some interesting content.
I imagine similar questions could come up about helping generate character qualities (things like "How can I show that my character has a deep fear of heights in a natural way?"), setting details ("How can I illustrate that a deep evil permeates a city on my imaginary world?"), and so on.
How should we as a community deal with these questions? Are they on- or off-topic, too localized or broad enough to be helpful?