A dangerous horde of venomous snakes together with a giant boa escapes from a leather factory. Meanwhile, at a local girl's school, everyone is preparing for a graduation. However, it is suddenly stopped, after snakes attack schoolgirls. Will they escape and survive the monster's attack?

Pest exterminators Ah Fat and Uncle Sam are commissioned by the Regent Hotel to exterminate all rats in building. When the lizards are brought to the hotel, the hotel staff mysteriously disappear one by one, and a thrilling journey of "pest control" is about to begin.