During the Dajing period, Xu Luokui, a girl born in July and a half with an ominous nature, accidentally rescued Yan Jingchen, the prince of Zhenguo, who was falsely accused of treason. From then on, he relied on him. Xu Luokui was moved by Yan Jingchen and helped him to judge the turbulent world and vindicate the Zhenguo. The two worked together and finally joined hands to create a new peaceful age.