After discovering her illegitimate status in the House of Reine, Octavia faces disownment. Unfazed initially, she soon contends with her power-hungry father and former suitor battling for her grandmother's mysterious heirlooms. Unbeknownst to her kin, Octavia is destined for a grander inheritance. As she aspires to emulate her detective grandmother, she clashes with aristocrats, enigmatic thieves, and cursed magical artifacts. Alongside a wrathful angel queen, Octavia also encounters a peculiarly infatuated young marquis, adding to the intrigue.