Hong Kong didn’t have a female special force in the police department in the past. However, due to Madam Wu and Madam Law’s excellent performance, the administers of the police department decided to set up the first female special force in history—the Banshee Squad. Madam Wu and Madam Law lead and train the squad. The training in the Banshee Squad is just as tough as that in the male Tiger Squad. Under the tough training of the two officers, the Banshee Squad is soon able to go on missions. However, during a mission to jointly protect jewelry with Tiger Squad, the squad led by Madam Wu and Tiger Squad are both defeated by an international thief. ...

Four new Banshee Squad Members join the Hong Kong Police Academy to undergo training supervised by Madam Wu. Their personalities don't click with the current Squad Members, resulting in petty arguments and duels. However, they later make peace with one another as they join the Tiger Squad Members, supervised by Inspector Kan, to undergo new training courses together and combine forces to take down a band of terrorists....