The three heroines, Wong Ang, Wu Nga, and Heung At expose a murder case involving three dead bodies found in an old temple. Unbeknown to the trio, they've fallen in a trap laid by gangster Hui Pui-shing, who desires to avenge his brother's death by eliminating the women. With the cooperation of Hui's righteous subordinate, the police arrest Hui for smuggling tobacco and seizes their forged banknotes.