Modern-day forensic doctor Lin Wanci is reborn as the fake heiress of the Jing'an Marquis's household, just as the real heiress returns with a System that steals people's fortune. To keep the household at peace, Lin Wanci is forced to take the real heiress's place and marry into the Northern Prince's manor. On her wedding night, she discovers that the prince is the “real culprit” behind the laboratory explosion in her previous life. They are both transmigrators. The marriage is a plot in disguise: the real heiress's System needs to devour the prince's fortune, while Lin Wanci's true identity turns out to be the “key” to unlocking the treasures of the previous dynasty. As the three clash through political schemes, mystical arts, and the System, they gradually uncover the dynasty's secrets and the truth behind their transmigration...
