In the 21st century, a female officer was injured in a mission and fell into a vegetative state. After that, her soul passed into the body of Princess Gege, who was in a down-and-out palace in the Republic of China. Due to family reasons, she was forced to marry into the governor's palace to seek asylum. She met and fell in love with Sun Yi'an. As time went by, because Su Wanning came from the new century and received different ideological education, the two parted ways, each pursuing their own ideals. The war caused many righteous patriotic heroes to sacrifice on the front line, including them. Xia Ran finally woke up in the hospital. After recovering, she returned to the army and continued working. The superiors sent a new comrade who had just been promoted to work with her to complete the next task. The two hit it off, especially Xia Ran.