Hsu Lei (William Hsieh) is not the typical teacher. An ex-gang member, he often uses unorthodox methods to help solve the problems of his students. Along with his coworkers Dean Huang (Ye Min-Zhi), Ms. Tong (Jade Chia), and Ms. Wan (Jean Kuo), Hsu tries to provide the best education, whether in academics or life, to his students, including Lu Xiaoman (Tu Shih-Mei) and many others.