Hui Chun-sum is an elite OCTB officer. He is fearless and competent. His boss thinks highly of him, and his colleagues really admire him. But his ultimate dream is to join SDU. Another elite OCTB officer Shum Wai-lik has a shrewd mind and extensive experience. Although the duo have different approaches, but they are like-minded and ideally complement each other. Police suffer heavy casualties as t...