Characters
What are you people doing here? We can't continue the story 'til Tom gets back.
— Jason · The Purple Rose of Cairo

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The story is described as something that cannot proceed while one person is missing. Asking why the others are there makes their presence part of the immediate difficulty. The line treats narrative progress as a shared task, with Tom’s return presented as the condition for getting it moving again.
Context reviewed