The Si clan was torn apart by internal strife, leaving Si Mo with no family. But she possessed the clan leader's command token and was the sole heir to the Si clan. Many factions set their sights on her, hoping to seize the token. Lu Beifeng, the most enigmatic man in the Lu family of Jiangcheng, replaced her memories to protect her. She became Lu Jiangxue, Lu Beifeng's younger sister. From then on, his fierce love for her remained buried in his heart as he protected her and kept her safe for the rest of her life.