Su Qingyuan, the daughter of the reclusive Su family, was abandoned by her parents as a bargaining chip in Mingyue Valley of the Demon Sect when she was five years old, in exchange for the stability of the family. For ten years in the Cold Valley, she used poison as a meal and blood as a weapon. She tempered the poison-testing cauldron into the sharpest blade and became the youngest intelligence hall master "Kite" in the valley.
When she accidentally discovers the truth about the transaction between her parents and the owner of the valley, and learns that her family is actually the descendant of the former royal family, and that her own existence was a calculated sacrifice, the past family ties and hatred are torn in her heart. Seven sects besieged Mingyue Valley, and she was captured to protect the young master of the valley. However, she reunited with her uncle who loved her most in the execution hall.
The left hand is the bloodline secret left by her grandfather, and the right hand is the Valley Master's final entrustment. She stands on the edge of good and evil, and finally uses her own way to tear apart conspiracies, judge betrayal, and break free from the shackles of "abandoned son" and "sharp blade".
The rivers and lakes are far away, and no one knows Su Qingyuan anymore. There is only one poisonous doctor left. The cold plum jade pendant rings softly on his waist, and where the frost is ashes, there is a breeze.