Lin Xiao, China's strongest special forces soldier code-named "Zhulong", in order to fulfill the last wish of his comrade-in-arms and investigate the truth behind his brother's disappearance, he retired from the army and returned to school incognito, becoming an ordinary student in the History Department of Tunghai University. However, there is an undercurrent surging under the ordinary campus life, and he has to use the extraordinary skills he has mastered in the special forces to gradually uncover the huge conspiracy hidden behind the campus.
