Lin Xiao is the ace sniper of China's top "Dragon Flame" special forces. While performing a transnational anti-terrorism mission, he accidentally traveled back to his high school days in 2008 due to the explosion of an enemy's high-tech weapon. With the powerful strength and memory of the special forces, he not only has to adapt to the youthful campus life, but also protects his crush on the academic goddess Su Qing, while at the same time uncovering the criminal conspiracy hidden in the campus and rewriting the regretful fate of his previous life.
