At the Break of Dawn is a fanfiction story based on the Temeraire-series by Naomi Novik. The story contains little spoilers; apart from the setting and some of the main characters, it has not much to do with the storyline of the books.
About Temeraire
If you've never heard of Naomi Novik or Temeraire, you could read my introduction before reading At the Break of Dawn. For more information on Novik and her books, visit the links below.