Lan Yue, a modern working woman, wakes up and transforms into the cannon fodder heroine in the novel who is doomed to die young; the original owner is used as a marriage pawn by the family and is about to marry the powerful Zhenbei Hou Murong Yuan who is nearly 40 years old; Lan Yue is fully aware that Murong Yuan is the villain in the plot of the original book, and the heroine and his daughter will be united He killed her by his own hand; in order to survive, she offered to marry Murong Yuan, hoping to use his power to avoid death; on their wedding night, she discovered that Murong Yuan was not as ruthless as described in the original book, but had an unknown past; after the marriage, Lan Yue circled between the inner palace of the Hou Mansion and the conspiracy of the court, gradually The truth that the original book had been tampered with was gradually revealed; she and Murong Yuan went from being wary of each other to fighting side by side, and their relationship sprouted in the test of life and death; at the same time, the heroine and the hero secretly planned to take away the military power and family property from Murong Yuan; Lan Yue used modern knowledge to help the Hou Mansion resolve the crisis, But she unexpectedly discovers that she has a secret hidden in her time travel; in the end, she must make a choice: return to modern times or stay in ancient times to fight fate with Murong Yuan; the whole book revolves around identity dislocation, intergenerational conflict and power game, and completes the transformation from cannon fodder to chess player in the intertwining of intrigue and warmth.