After her mother was killed during a mission twenty years ago in Thailand, Fa (Eliza Sam) decides to join the police academy in Hong Kong where she meets 5 new friends played by Anita Chui, Cathryn Lee, Mandy Ho, Joyce Cheng and Jeana Ho. Failing to graduate, the six women are given the opportunity to join a formerly disbanded all-female elite force to hunt down terrorist Gu Zhi Jin, the man who killed Fa's mother. The group of female agents led by a friend of Fa's mother go undercover in Malaysia.