Song Huaian and Song Shizhou's father and son returned from the Western Regions to celebrate the old man's fiftieth birthday. On the way, they picked up an abandoned baby and brought it back to the Song family. The old man named her Song Xinyue. Xinyue was cherished and loved by her whole family since she was a child. When she was five years old, her extremely talented eldest brother Song Yunce was recommended to study at the Imperial Academy in the capital, and the Song family moved to the capital. The Zhenguo General's Mansion next door is related to the Jinling Rong family by marriage. Gu Chengye, the eight-year-old general's son, often comes to the Song Mansion to play and loves the soft and well-behaved Xinyue.
The good times did not last long. When Xinyue was twelve years old, General Gu was seriously injured and returned to Beijing to recuperate. At the age of fifteen, Gu Chengye took the initiative to go to the battlefield. Four years later, he returned to the capital with great military exploits, and saw the graceful crescent moon again, and all his childhood care turned into full of love. At the same time, the Song family saw Xinyue growing up and returned the jade pendant she carried. The jade pendant hid the palace patterns, and the truth emerged. Song Xinyue was actually the biological daughter of the imperial concubine who was living abroad. The friendship between childhood sweethearts in the past broke through the barriers of royal status and family status. The relationship between the young general and the royal family has been full of many tests since then.