Dragonsfall, or: The Dragon, the Witch and the Captain

After the fall of the Princess, the Dragon has wandered far and wide in search of somewhere to rest. He then comes upon a city laden with riches and is drawn into a conflict that has been simmering for years. When a vengeful queen and a stoic general arrive, everyone seems poised on the brink of battle.

---This is a sequel to 'The Princess and the Dragon', and while it is not essential that you read that story, it does help.---