I'm sorry I haven't read this novel specifically, so I can't give a detailed introduction. But generally, a novel named 'Fire Angels' might be about some characters who could be related to the concept of 'fire angels'. It could involve a story of mystery, adventure or some kind of spiritual journey perhaps.
Since I'm not familiar with 'Fire Angels a novel', I can only speculate. It could be a fantasy novel where the fire angels are the central characters. They might have special powers related to fire, like being able to control it or use it for some important purpose. The story could be set in a fictional world, full of magic and mystery. There could be conflicts between the fire angels and other beings, or perhaps they are on a quest to save their world or another. It might also explore themes such as good versus evil, the power of the divine, and the nature of sacrifice.