Lin Yi, 28 years old, is a doctor of modern history and a military industry enthusiast. Due to an experimental accident, he traveled to the outskirts of Xianyang in 247 BC (the first year of the Qin Dynasty). With a knowledge system and historical foresight that spanned two thousand years, he started the legend of assisting Qin Shihuang to unify the world. Lin Yi discovered that there is a phenomenon of "loss of national destiny" in this world - the historical trajectory that the Qin Dynasty should have been eroded by some kind of force. The emergence of mysterious organizations and the loss of national destiny made him determined to use knowledge and modern ideas to stabilize the national destiny and change the fate of the Second Emperor of Qin who died...
