Shen Weiwan, the legitimate daughter of the Duke of Zhenguo's household, was diagnosed as a child with a frail heart and became a laughingstock in the capital. To pave the way for her talented and beautiful younger sister, her family cast her aside and made her marry in her sister's place. Her groom was Xiao Jue, the Marquis of Jing'an, a famed God of War rumored to be cruel, bloodthirsty, and paralyzed from the waist down. On their wedding night, she sat alone in the bridal chamber, only to hear Xiao Jue mock her coldly: "A worthless girl from the Duke of Zhenguo's household thinks she deserves to be my wife?"
Shen Weiwan conceals the sharpness in her eyes and meekly accepts his words. No one knows that within her frail body resides a master healer and poison expert capable of bringing the dead back to life and restoring flesh to bone. Nor does anyone expect that the cold marquis, confined to a wheelchair, will quietly tuck her in at night.
When her younger sister fakes a pregnancy to win favor, Shen Weiwan exposes her affair with another man. When her stepmother poisons her, she turns the poison against her and makes her disgrace herself. When court officials accuse Xiao Jue of treason, Shen Weiwan uses her medical expertise to identify the forged evidence, then stuns the entire court by debating the assembled officials.
Xiao Jue watches his little wife, who coughs as if she can barely stand during the day but goes out at night with a medicine chest to "right wrongs." His fingers tighten slightly on the armrest of his wheelchair. "My lady, were you the one who dealt with those black-clad men west of the city last night?"