Shen Zhao, a modern pharmaceutical company CEO, dies unexpectedly and transmigrates into the body of the legitimate daughter of the Marquis of Zhenguo in the Great Yong Dynasty. Poisoned and with only three months left to live, she binds herself to a life-prolonging system. To survive, she must win the genuine love of her destined person, Xiao Jue. Shen Zhao spends five taels of silver at the slave market to buy Xiao Jue, a condemned slave covered in scars who appears to be mute, and takes him as her husband. Bound by a marriage contract, the two complete the system's intimacy missions to accumulate affection points while fighting the schemes and conspiracies within the marquis's household. When another storm erupts at the Eastern Palace's chrysanthemum-viewing banquet, forces from all sides become involved. As they test and challenge each other, the pair gradually uncover the many secrets they have each kept hidden.