Ji Yuntang, who possesses modern knowledge, accidentally traveled through time and became the long-lost legitimate daughter of the Hou family. After she returned, she was forced to marry into the Night King's Mansion in place of her adopted daughter and take care of the Night King Luo Jun, who was severely injured and infirm. There are people in the house who keep making trouble, and relatives from the past often come to cause trouble. Ji Yun always responded calmly, took good care of her husband with her medical skills, and resolved many crises with her wisdom. The two accompany each other in the wind and rain, recognize the various human emotions in the world, stick to their hearts and walk hand in hand, and finally usher in a stable and happy life.
