When undercover cops start losing their lives to drug lords who blame their demise on "poor acting", the Police Force counters by sending Hong Kong's Finest to acting school. Man Long (Jim Chim), a constable whose antics and showmanship is handpicked by the Deputy Police Commissioner to enroll incognito into a Performance Arts Academy as an experiment in upgrading police acting abilities. Man Long quickly finds out that his plain looks and exaggerated performance skills are no match to his younger and better looking classmates. His only good friend in class is a fellow mid-term new student Dani (Charlene Choi), whose claim to fame is starring in a string of skin flicks, but is an aspiring actress with a heart of gold. Man Long's confidence plunges into a downward spiral when he fails in a police operation and nearly loses his life. Then a favor he extends to Dani turns into an outright expulsion from the academy...