During the war-torn years of ancient times, there was a strange letter. When you open it, you will find the core star of Sirius. This power can be used to unify the world. However, after the war, it has long since disappeared. Gu Ziming, the second daughter of the Gu family, and Xiao Yan'er, the daughter of Sirius, were exchanged as hostages, and joined forces to break the situation, solve the unsolved mysteries, and protect the peace of the world.
Purpose: to protect