Modern ER doctor Helena Shaw dies from overwork and transmigrates to the Republican Era, where she has a one-night stand with warlord Spencer Dunn and becomes pregnant. Five years later, Spencer discovers he has a son and forces Helena to marry him, bringing her into the Governor's Mansion.
Framed and put on death row by his brother, Crown Prince Shangguan Xi is allowed to leave an heir. A modern forensic doctor, Yan Weichi, dies and wakes in the body of his chosen consort. To survive, she helps him solve the case and reclaim his title using her knowledge from the future.