Shen Qingwan, a medical prodigy from the 21st century, unexpectedly transmigrates to the Canglan Dynasty and becomes Shen Wanyue, a concubine-born daughter of the Duke of Zhenguo's household who was framed and killed. The original Shen Wanyue was envied by her legitimate elder sister for her talent, falsely accused of seducing the Crown Prince, and ultimately tortured to death. Shen Qingwan inherits her body and her hatred. Determined to plan every step carefully, she vows to make everyone who harmed her pay in blood.
On the road to revenge, she becomes entangled with Ye Heng, the ruthless regent. Ye Heng was once the original Shen Wanyue's betrothed, but when she was framed, he stood by and did nothing, even going so far as to push her into the abyss himself. Shen Qingwan loathes him, but fate brings them together again and again, and amidst clashing blades and schemes, affection begins to blossom. Yet as the truth gradually comes to light, she discovers that behind Ye Heng's coldness lies a devotion known to no one, and that her hatred is merely one part of a carefully laid game...
In the end, with revenge entwined with love and hate, will she sink into hatred, or let go of her obsession and join him in facing the future?
