While a fragile peace has begun to settle across the Five Queendoms of the known world, trouble brews beneath the smooth façade. The first gate between the Underlands, where Eresh rules over the shades of the dead, has already been opened--and the scheming shade of a dead sorcerer has evil plans he hopes to unleash on the world. In the world Above, the Scorpicae struggle to find a path forward in defeat, the embattled regent of Paxim gets more than she bargained for, and a young woman who barely survived the Sun Rites finds herself the indispensable right hand of a priest-queen whose sanity appears to be slipping away.

As living women across the Queendoms take desperate action to stay alive, and dead women plot to regain what they've lost, the time for the next Sun Rites nears. When five queens gather in the Holy City of Sestia for the most important ritual of their lives, who will be left standing?