Ye Qinghuan is forced into the imperial palace by her childhood sweetheart, Lu Wensheng, but falls in love with Shen Huaizhi, an emperor concealing his identity, and becomes pregnant with the imperial heir. After Lu Wensheng returns victorious, he demands that she become his concubine. Shen Huaizhi rescues her, and she subsequently reclaims her businesses and her identity as the daughter of the Ye family. Together, they uncover evidence that Lu Wensheng murdered innocent people to claim military merit and colluded with Prince An. At a polo banquet, their true identities as the Emperor and Empress are revealed. While Shen Huaizhi personally leads an expedition to war, Ye Qinghuan organizes provisions and reinforcements and foils the Empress Dowager's attempt to seize the throne. In the end, she safely gives birth, and the couple joins hands to protect their empire.