An ancient-era romance centered on a strong female protagonist, filled with heartbreak and a desperate quest to win back the woman one has lost. Xie Ran, the General Who Guards the North, once cut off her own finger to save Crown Prince Xiao Yanting. Yet, on the eve of their grand wedding and after their triumphant return, she is forced to surrender her position as Crown Princess to a secondary consort and enter the palace through a side gate. With her heart shattered, she cuts off all emotional ties, heads north, and devotes herself to protecting the northern frontier. When the truth finally comes to light, Xiao Yanting desperately pursues her and seeks redemption, even abandoning his empire, but still cannot win her back. In the end, Xie Ran claims her own territory and becomes a ruler in her own right, leaving their shared mountains and rivers with nothing left between them.