The Japanese terrorist Red Tiger used Hong Kong as an important base for smuggling arms in the Asia-Pacific region. They also used high-end technology to deliberately challenge the SAR government. The government was helpless, which seriously threatened the safety of all Hong Kong citizens. In order to prove his ability, police officer Chen Cong (Eric Tsang) went to the police academy to select four rebellious teenagers, Jack (Nicholas Tse), Match (Stephen Fung), Alien (Sam Lee) and Millennium Bug (Mandy Yip) to form a special police new human, in order to capture Red Tiger. In the first operation, the special police infiltrated the organization of the gangster Jie Shao, who was the contact person of Red Tiger. The special police gradually gained Jie Shao's trust, but were regarded as Jie Shao's accomplice by the police and were attacked from all sides. While everyone was struggling to escape, they also discovered Red Tiger's major conspiracy...