Police Senior Inspector Chow Chun-kit faces personal losses and betrayal while tracking crime lord Tai Cho-Fuk. ICAC Senior Investigator Ko Ho-yin struggles between family bonds and justice in his pursuit of a corrupt officer. Deputy Director of Public Prosecutions Lau Yu-fan seeks balance between law and compassion. The three law enforcers unravel a web of corruption through murky power games to finally deliver justice.