Ming Yun, the legitimate daughter of the Minister of Rites, has been accustomed to inner courtyard disputes since childhood. Relying on her calmness and strategic mind, she protects her brother and manages the family affairs. During an unexpected incident, she saves a four-year-old child named Yun'an and discovers his lineage is related to Qi Qinghui, the Heir of Duke Rong. Seeing through her original engagement, Ming Yun decisively chooses a new path, moving from probing to cooperation with Qi Qinghui. Facing family struggles and the military provisions case, the two join forces to break the deadlock and protect their loved ones, gradually building trust amidst the vortex of political intrigue to jointly plot a secure future.