Inspector Nat (Natalis Chan) send three undercover cops Ray (Chapman To), Tom (Shawn Yue) and Chubbie (Lam Chi-chung) to infiltrate triad boss Sam (Eric Tsang).
Inspektur Nat (Natalis Chan) mengirim tiga polisi menyamar Ray (Chapman To), Tom (Shawn Yue) dan Chubbie (Lam Chi-Chung) untuk menyusup bos triad Sam (Eric Tsang).