Shen Qingtang, the legitimate daughter of the general's palace, was suppressed by her stepmother because of her fate as a "lone star of evil". Her fiancé Lin Zhiyuan broke off the engagement on Xue Ye. When she was disheartened, Gu Zhaohan, the king of Zhenbei who was rumored to not live for three years, proposed to marry her. After the marriage, Shen Qingtang discovered that Gu Zhaohan was pretending to be ill but was actually investigating the court's conspiracy. The two gradually fell in love while testing each other, but they were separated many times due to Lin Zhiyuan's repentance, his stepmother's frame-up, and the villain's pursuit. In the end, Gu Zhaohan revealed the truth about the war, and Shen Qingtang healed his old wounds. The two broke the curse of the "Lone Star" and joined hands to protect their home and country, becoming each other's salvation.
