Shen Tingdeng, once the renowned chief examiner of the Bone-Lighting Bureau, was afflicted with a deadly chill-pith poison after an old case that wiped out an entire household. He changed his name and identity, then traveled the martial world in a mobile clinic called the Green Lantern Bone-Illuminating House. He had intended to spend the rest of his life making ends meet by treating patients and examining corpses. But when a body was found hanging in an inn on a rainy night, he was drawn back into the Bone-Illuminating Record, a book from thirteen years ago with the power to upend both the martial world and the imperial court.