A woman unexpectedly returns to life in the body of her ill-fated twin sister. Determined to uncover how her sister died, she enters a noble household filled with old grudges, buried crimes, and carefully protected secrets. With the support of a powerful princess, she follows the law, gathers evidence, and dismantles each lie without surrendering to intimidation. Her investigation not only brings justice to her sister, but also exposes a series of forgotten cases involving women whose voices were ignored. In the end, she is appointed to lead a new office dedicated to wrongful cases—turning one family tragedy into a lifelong mission to defend the innocent.
