Following 20 years of being at war, a group of aliens instigate a sneak attack on the human race. In the face of this unprecedented disaster, the police stand up to the bugs and beasts to start a life-and-death struggle, sworn to protect their homeland.
| Actor | Role |
|---|---|
 Raquel Xu DongdongJin Shanya | Jin Shanya |
 Eric Tsang Chi-WaiDr. Wei | Dr. Wei |
 Henry Prince MakChen Quan | Chen Quan |
 Diao BiaoLuo Bufan | Luo Bufan |
 Yu XiaowanLina | Lina |
 Rong WeifengFatty | Fatty |
| ZZhu YingfangDing Yi | Ding Yi |