Jiang Zijin poisoned herself to death, then transmigrated into the body of a concubine-born daughter in a marquis's manor.
Her mother died early, and her stepmother sees her as a thorn in her side.
She has barely opened her eyes when her elder half-sister's marriage negotiations are underway. The intended groom is Shen Xu, the mighty General of the North, who has returned from guarding the border. Supposedly his old injuries have flared up, and he has little time left. Marrying him means bringing him good fortune and then becoming a widow. Her stepmother can't bear to send her own daughter into the fire, so she pushes Jiang Zijin forward instead.
On her wedding night, Jiang Zijin meets Shen Xu. His face is pale, but his gaze is sharp. He's clearly not dying. He's pretending to be sick!
Shen Xu also sees that his new wife is no ordinary person. Though she's a concubine-born daughter, she knows how to prepare medicine. The powders in the bottles she carries are even more precisely formulated than those made by the military's medical clinic.
They see through each other's schemes and immediately strike a deal. In public, she plays the frail, delicate wife and helps him fend off the many spies watching him. In secret, she uses modern pharmaceutical knowledge to treat his old injuries and improve the military's wound medicine formulas.
Meanwhile, she manages medicinal herb fields in his fiefdom to earn money and establish herself, while gathering evidence that her stepmother was responsible for her birth mother's death.
Then she accidentally learns about Shen Xu's plan to feign illness...
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Theme: Only when everyone is safe can a small family have peace.
Theme: Refuse to accept your fate in the face of hardship.
