Modern girl Jiang Rong unexpectedly travels through time, becoming a replacement concubine-born daughter, forced to marry Pei Ci, the Heir of the Zhenguo Duke who carries suspicion of treason and is blind. Originally planning to escape, she touches Pei Ci and awakens the ability to predict the future, glimpsing her own miserable ending of dying a tragic death, and thus chooses to stay to seek survival and plot wealth. Relying on foresight, she cracks the primary wife's daughter's schemes, avoids the Third Prince's assassination, and even brings modern makeup trends into ancient times to open a shop, smoothly building an intelligence network. As the investigation deepens, she discovers the mastermind behind the scenes is the Empress. Jiang Rong and Pei Ci join forces to lay out plans, exposing the rebellion conspiracy of the Empress and the Third Prince at the sacrificial grand ceremony, protecting the imperial heir, and ultimately reaping wealth and sincere love.