Lu Ruan, the daughter of the prime minister, marries the prince. On her wedding night, she is mistakenly given a love potion, so she has to seek help from Qingshang, the shadow guard who has been with him for seven years. The two have a relationship, and Lu Ruan also confirms their love for each other. The prince had a sense of belonging and made an agreement with Lu Ruan to make peace, so Lu Ruan asked Qing Shang to join the army and perform meritorious service in order to gain his father's approval. Lu Ruan found out that she was pregnant with Qing Shang's child, but was wronged due to the rumors and Qili's scheme, and fled to Qingcheng with her father. Qingshang had made many military exploits in the army, and the two exchanged letters, but later Qingshang lost contact. When Lu Ruan went into labor prematurely, he rushed back in time and gave birth to the child successfully. In the end, Qing Shang proposes marriage, Lu Ruan insists on marrying him, and the two get married. Qing Shang also punishes Qili, and the marriage is consummated.
