Warring States period, State of Zhao. The Emperor dies under mysterious circumstances, and the Grand Marshal vanishes without a trace. Suspecting the new Emperor of murdering her brother, Bai Ying assumes his identity, taking his place as Grand Marshal to exact her revenge. Despite having survived impossible odds on the battlefield, nothing could have prepared Bai Ying for the Empress, whose presence soon begins to stir feelings she never expected. Unbeknownst to Bai Ying, however, the Empress has plans of her own for the fate of the kingdom...