Ten years ago, the Emperor's eldest daughter was sent to Rouran in a political marriage. Ten years later, Western Rouran fell to the imperial court. The princess petitioned to return home and spend the rest of her life in retirement. The new emperor granted her request and dispatched Marquis Liu Fu of Ruyang together with Lu Wei, Vice Minister of the Court of Judicial Review, to escort her back to the capital. _ _ _ _ _ Everyone believed that although she was still an imperial princess, her glory had long since faded. The emperor who had once been her father was now replaced by her cousin. Widowed and without a powerful protector, the rest of her life seemed destined to be one of quiet obscurity. No one could have imagined that, for Zhang Yuwan, her real life was only just beginning. Her future was destined to be anything but ordinary. _ _ _ _ _ To Lu Wei, escorting the princess was simply another assignment with plenty of opportunities for personal gain. From the moment he left the capital, he had been calculating just how much profit he could squeeze out of her. Until— The two of them became targets of an assassination. As one unsolved case after another unfolded, Lu Wei found himself drawn ever deeper into a web of conspiracies. Left with no choice but to cooperate with the princess, they unraveled clue after clue in search of the truth. Lu Wei often wondered what sins he must have committed in a previous life to end up crossing paths with this woman. _ _ _ _ _ To everyone else, Lu Wei was an ethereal gentleman—aloof, incorruptible, seemingly untouched by worldly desires, blessed with uncanny insight and almost supernatural perception. Only the princess knew the truth. Behind his cold exterior lay a calculating opportunist with a heart as hard as iron. In a world consumed by chaos, he lived for no one but himself. But as the saying goes, every cause has its effect. And I am your retribution.