Song Ranshan, the son of a general, seems to be stubborn and weak, but he is actually the master of the reclusive Crescent Moon Pavilion, deliberately hiding his talents. Xie Qinggu, the then imperial master, came to the school to be his teacher, secretly investigating the old case of his biological mother's murder, and also looking for an old friend who was separated when he was young. When the two met for the first time, they were bound to each other. When they got along in school, they talked about "being humble". In school, Song Ranshan defended her classmates but was made trouble by the children of the aristocratic family. Xie Qinggu stepped in to protect the young boy forcefully. Fragments of dust-laden childhood memories began to emerge. After that, the dude blocked him halfway again. Song Ranshan remembered his teacher's teachings and responded calmly. Xie Qinggu still rescued him, treating the young man's wounds under the lamp and giving gentle guidance. The two rely on each other in the undercurrents of the court and old cases, uncovering their hidden dual identities layer by layer, and work together to clear away the fog of the tragedy of the year. They protect each other in troubled times, and work together to keep their true intentions.
Purpose: The prince of the general and the prince of the Yin Dynasty both hide their sharp edges and watch each other in the turbulent court. They work together to clear away the fog of injustice, stick to their original intentions, clarify the chaos in the court, and depict the ancient story of confidants working side by side to protect the mountains and rivers.