Nona Grey must choose her path within the Convent of Sweet Mercy, but her decisions are complicated by powerful enemies and the internal struggles of friendship, revenge, ambition, and loyalty. As a student of Mystic Class, Nona learns the secrets of the universe, but this knowledge only makes her choices more difficult. She stands between the paths of a Martial Sister, a Sister of Discretion, a Mystic Sister, or a Bride of the Ancestor. Her enemies, including a thwarted assassin, an ambitious empress, and a vengeful lord, use the very system she is part of to attack her. The narrative framework appears to be third-person, following Nona's internal and external conflicts as the world closes in around her.

The novel continues the narrative established in the first book of the series, focusing on Nona Grey's development and the complex choices she faces within the Convent of Sweet Mercy. The premise suggests a blend of coming-of-age themes with high-stakes political intrigue and action, characteristic of the fantasy genre. The description highlights the internal and external conflicts Nona must overcome, pointing towards a character-driven plot with significant world-building elements. The mention of 'blood' and 'thwarted assassin' indicates a tone that balances personal growth with intense conflict and potential violence.