Ten years ago, Tang Weicong (Benjamin Yuen) and Shen Ao Ming (Shaun Tam) joined the ICAC at the same time. They were trained together and were brothers. Ao Ming was injured in a private action, and he resigned soon after, and has not been heard from since. Ten years later, when Wei Cong investigated a suspected bank employee corruption case, he discovered that Ao Ming was involved in it...