Hungry for fun, American soldiers crowd the bars of late-’50s Hong Kong. Staffed with handpicked young girls from the countryside, the Lucky Bar is the most popular of them all, and Shui Mei is the smartest and keenest of the apprentices working there. She soon catches the eye of Jimmy, who every evening wanders from table to table, showing his father’s photo and asking for news about him.

Lo Lieh is the ringleader of the Snake Sect, intent on reviving a deadly faction known as the "Five Poison Web." In order to do so, he has an affair with the sexy ringleader of the Scorpion Sect, Angela Yu Chien. However, there is also the Centipede Sect to contend with, as well as other assorted martial artists.