Elite soldier Zhao Wu falls off a cliff while saving someone, only to transmigrate unexpectedly to the Xiongnu frontier during the Western Han dynasty. Through careful planning, he brings Su Wu and Chang Hui back to Chang'an. Along the way, he even gets to play the hero and rescue a beauty, winning the heart of a Han dynasty maiden and finding a love that transcends time. Later, he crosses paths with historical rebels such as Shangguan Jie, Sang Hongyang, and Liu Dan, the Prince of Yan. In the end, he must face Huo Guang, the most powerful minister of the Western Han. How will a man from the future handle these complicated situations?
