A fortune teller fails to help a prostitute who is facing a deadly calamity. When he meets a young boss of a tea restaurant, he predicts that his bloodthirsty tendencies will lead him to a prison sentence for murder.
A story that tackles the life experience and mental issues that plague the PTU officers from the perspective of a former undercover cop who returns to the force. After successfully bringing down the triads, Gao Jiasheng (Raymond Lam) goes back to wearing the police badge and crosses paths with Sergeant He Huiling (Charlene Choi) and Team Leader Liu Jianhui (Alex Fong). The three have their share of misgivings, but learn to build trust and friendship through a series of dangerous missions.