This drama mainly tells the story of Long Zhan's southern and northern expeditions to the border areas, and his outstanding military achievements. After the war, he decided to return to the countryside and live a peaceful life. In order to teach his son strictly, he concealed his identity from his son Long Xiaolong and secretly protected him. And taught him advanced medical skills and the ability to fight against evil forces in society, allowing his son to strengthen himself with his own wisdom and strength. However, Long Xiaolong's behavior angered Prince Mu of the Great Xia Dynasty. The emperor is dissatisfied with the way Long Zhannan protects and blesses his son. The two finally met and confronted each other, and the situation was tense and intense. Just as the situation was about to escalate, the emperor realized that his own son was at fault first. As the ruler of the empire, he should govern the world and cherish the talents of the country. He deeply apologized to Long Zhannan and decided to settle all disputes. He agreed that Long Zhannan had a good way of educating his son, and felt guilty. He went back and educated his son well