After rebirth, Lydia swaps marriages with her sister and is forced to wed General Edward who dies young while her sister chooses a deceitful scholar. Lydia's wisdom and past memories helps her save Edward's life, crushes political conspiracies, and exposes her ex-murderer's treachery. From abused daughter to a noble lady, Lydia's journey culminates in righteous love, while her status-obsessed sister reaps tragic consequences.