Dezi secretly suffers from Fraktur, the same disease that drove her father to madness and treachery. Since his exile, she’s leaned on her mentor, Khaalida, to help her Oversee Audun, a planet plagued by storms and disease. But when Khaalida vanishes without explanation, she leaves only a cryptic letter: Ask about the One With Seven Names.

As Dezi faces the impossible burden of saving her planet from the Unraveling, a prophesied destruction of Audun by a black hole, she's forced to rely on the tales of a bitter, elusive prisoner who’s lived six extraordinary names entwined with Audun’s demise and Khaalida’s disappearance.