When Song Ran was young, she was entrusted by her family to enter the palace and was named queen, raising the emperor's son Jing'er. Deep in the palace, she experienced harem plots and imperial power disputes, and unexpectedly discovered that her sister's death was actually caused by Emperor Gu Yuanzhi's plan to stabilize the throne. Song Ran endured the plot and teamed up with Jiang Minmin and Pei Xiang, who were also harmed by him, to expose his various conspiracies and let him get the punishment he deserved. After that, she devoted all her efforts to assist Jing'er in ascending the throne and taking charge of the throne. Finally, she gave up her position as Queen Mother, left the palace to study medicine, and pursued her own free life.