During the Dayin period, the female general Dong Yue, who had suffered from the pain of war, returned to the time before the war, assassinated the traitor Lu Yuantong to stop the war and save the people. She fought and saved the "traitor" Feng Xi, who had planned everything, and fell in love with each other. Feng Xi used all means to cause Dong Yue to misunderstand. Dong Yue went to kill Lu Yuantong alone, and Feng Xi died to save Dong Yue. Dong Yue went back to the past and chose to believe Feng Xi, but Feng Xi forgot her. She tried to help Feng Xi regain his memory, but she couldn't bear Feng Xi to hurt his body, so she had to protect Feng Xi silently as a stranger. Feng Xi fell in love with her again, and was willing to die with Lu Yuantong to realize her wish to stop the war. In order to save Feng Xi, Dong Yue went back to the past for the third time. After learning Feng Xi's identity, she helped Feng Xi's mother's family to vindicate, and joined hands with Feng Xi to support the third prince of Mingjun to ascend the throne, defeat Lu Yuantong, and bring peace to the world. However, due to the reversal of time and space, Dong Yue's life is about to end. Feng Xi secretly helps Dong Yue to survive but is discovered by Dong Yue. Dong Yue leaves without saying goodbye, and Feng Xi searches everywhere for her until one day they meet again under the moon and the holly flowers are in bloom...