The film centers around a Malaysian pharmaceutical company using a new virus to generate an epidemic. A secret organization, known as "The Leaker", discloses this information. After the suicide of the pharmaceutical company's son and a local reporter, the wife of the pharmaceutical company's owner leaves for Hong Kong. A Malaysian police chief , Hong Kong police officer, and journalist work together to locate her whereabouts.

Francis Ng Chun-Yuas Wong Dai Wai
Julian Cheungas Lee Weng Kan
Charmaine Sheh Sze-Manas Carly Yuen
Chrissie Chau Sau-Naas Phang Zhen Mei
Kent Cheng Jak-Sias Teo Jit Sin
Wilfred Lau Ho-Lungas Teo Chun Yann
Dominic Lam Ka-Wahas Secretary for Food and Health
Michelle Wai Si-Ngaas Jojo
Louis Cheungas Ho Ban Benson
Sam Leeas Danny Song
Joe Chan Kwong-Hung