- Ting Cheuk Fei (Michael Tse) has been undercover in the triad for a decade. In order to hide his true identity, he has acted fiercer than the rest, and infiltrated the inner circle of the Fuk Wo syndicate. However, he is growingly increasingly tired of this life. On the other side, triad mole Tuen Yat Fan (Pakho Chau) has risen the ranks in the police force’s anti-triad unit, and even has hopes of becoming the youngest chief inspector. Successful in both his career and in love, he yearns to shed his shady past and become a true policeman. Tuen plots to get rid of shadow boss Sung (Kenneth Chan) and his Tung Lei trading company. A drug trade between Fuk Wo and Tung Lei turns out to be a trap to find the moles.