When Jiang Zhaoyue woke, she was waiting to die.
Transmigrated as the daughter of a convicted official, she stood beside her younger brother, who was waiting to be executed with her, while the executioner's blade hung above them, ready to fall. Then she spotted a man in the crowd who cast no shadow.
"Wait. That man isn't human."
She escaped the blade by exploiting a demonic calamity, but remained a condemned prisoner of the Demon Suppression Bureau. The Bone-Eating Revenant that pursued her into the dungeon was asking about the book her father had hidden. A volume of The Shanhai Prison Register opened inside her.
Bone-Eating Revenant: Bone-Sensing. Bone-Illuminating Mirror Demon: Heart-Reflecting. Dream-Bloom Demon: Dream-Returning.
Each demon she collects gives her another power, but also brings her closer to the dangers of the prison. The man imprisoned in the book long before her is named Xie Wuwang. Nine chains bind him. He knew her late father, but warns her, "Above all, don't let the Demon Suppression Bureau find out."
A woman who returns home safely, a dream no one wants to wake from, an ancient temple that trades lifespans for the resurrection of loved ones... As Jiang Zhaoyue solves one case after another, she discovers that someone has already picked out the next demon for her.
But they overlooked one thing. Just because she can collect a demon doesn't mean she will.