Ji Youqian and her sister Jiang Liyi, who saved her, depended on each other for life. However, one day, because her sister was considered talented, she was accepted as a disciple by the general who had returned from the victorious battle, but she was unable to say goodbye to Ji Youqian who was traveling far away. After learning the truth, Ji Youqian chased to the general's mansion and wanted to see Jiang Liyi, but was beaten to death by the general's subordinates with sticks. But she still had obsessions in her heart, turned into a ghost, and stayed by Jiang Liyi's side every day. However, Jiang Liyi didn't know that Ji Youqian was beaten to death by her master, General Mu, and there was an incomprehensible knot in her heart. Ji Youqian accidentally discovered General Mu's conspiracy while guarding her every step of the way, but she was powerless. She could only watch Jiang Liyi being wronged by everyone, and finally died on the battlefield before the dawn of victory, tortured by poisonous flowers and enemy troops. But Jiang Liyi actually knew the conspiracy of this war, but she would rather die on the battlefield. "Sister!!!" Distraught, she killed everyone who betrayed them, but her sister could never come back...
Ji Youqian sacrificed her own future life in exchange for a chance to be reborn. She erased Jiang Liyi's memory of herself, but because of her limited mana, she was still a ghost after rebirth, and returned to the third month when General Mu accepted Jiang Liyi as his disciple. In the name of a doctor, she protected her sister from being harmed...
Purpose: Eternal loyalty and love