The concubine Su Wanli was naive and cowardly in her previous life, and was used as a stepping stone by her hypocritical sister Su Wanrou and the ruthless third prince Xiao Chengyu. Not only did the entire Su family get slaughtered, but she also ended up with poisoned wine in her intestines and died with hatred.
On her deathbed, she learned that the cold-faced regent Lu Siyuan had been silently protecting her for ten years and stained the court with blood for her.
Once she was reborn, she returned with the poisonous skills and Xuanxin Jade left behind by her biological mother. She lost her weakness and became ruthless. With her exquisite poisonous skills, she tore apart her eldest sister and kicked the scumbag, and settled the blood feud in her previous life step by step.
When Lu Siyuan met her again, he gave up his pretense of indifference and became paranoid to the extreme. He used his power to clear away all obstacles for her, pampered her to the core, and gave her his preference.
The two work hand in hand, Su Wanli uses poisonous skills to break up family feuds, quell conspiracies, unlock the triple secrets of Xuanxin Jade, and reveal the life experience of the princess of her former dynasty; Lu Siyuan helps her stabilize her position, resist foreign invasion, and assists the new emperor in enthroning the throne.
In the end, Su Wanli transformed from a concubine who was bullied by others to a holy empress who won the emperor's heart. She joined hands with Lu Siyuan to create a prosperous age and stayed together for a lifetime, writing a legend of poisonous counterattacks and the emperor's crazy favor.