This secondary world fantasy is set in a world where gods are trapped in human form and a powerful, tyrannical family uses them as weapons to rule the world. The story is told from the point of view of Yeine, a mixed-race woman who is summoned to the palace of her maternal grandfather after her mother's death. Despite having been a tribal leader in her supposedly-barbaric northern home Yeine is unprepared for the cruelty and scheming of her mother's family and their divine servants.
The book addresses an issue that has been around since ancient times (and is exemplified by the Iliad). How do you create characters that are powerful gods and yet are understandable to your readers? Jemisin's gods are trapped in human form as punishment after the Gods' War. They are massively powerful beings, but not only are they trapped in human form, they are slaves to the family who rule the world in the name of their enemy.
Yeine is not an ingenue, but she is understandably inexperienced and must keep herself safe in a dangerous new world, while trying to find out the truth about the life and death of her beloved but aloof mother. She was an easy character to identify with and her behaviour was understandable if not always particularly smart.