The general content of this novel is that Nangong Xiyue, a medical genius who excelled in both medicine and poisoning, was plotted by a villain. Once she traveled through time, she became the eldest lady of the Shangguan family. Shangguan Xiyue was blessed by heaven when she was born, possessing Shangguan's unique ethereal root. Shangguan Xiyue was plotted to death in a secret realm, but heaven protected Shangguan Xiyue's god. The soul was given to the system. After Nangong Xiyue passed through, she became the host of the system. The system required her to survive until the finale. Therefore, relying on the status and luck of the Shangguan family, Shangguan Xiyue became the third son of luck. The other two sons of luck were Lin Zhaoxue and Xiao Lingxiao. In their original text, the Shangguan family declined, and Xuan Tian The continent was closed and could not ascend. The highest level of cultivation was the peak of divine transformation. Finally, Lin Zhaoxue and Xiao Lingxiao, two sons of destiny, were invaded by demons and aliens. They died to protect the people of the world. After Shangguan Xiyue came through, he decided to change the ending of the original text, so he and his friends, the maid Yue Ling, worshiped the Xuanling Sect. The spirit worshiped Jianfeng, and Shangguan Xiyue went to Danfeng. By chance, Shangguan Xiyue rescued Lin Zhaoxue who was in the quagmire, so they called themselves sisters. Later, the three of them embarked on a journey with Danfeng's senior brother Lin Yueze and Jianfeng Xiao Lingxiao. They got closer and closer to the truth and stopped the invasion of demons and aliens.