 The well-known merchant Kasim is preparing to give a lavish banquet for the wealthy Chu Chin Chow, who is on his way from China. But the slave girl Zahrat sends a secret message about this to the bandit chief Abu Hasan, and Hasan and his gang of thieves rob and kill Chu Chin Chow while he is still traveling. Meanwhile, Kasim s brother Ali Baba discovers Hasan s secret cave, and helps himself to some of the thieves  treasure. While Hasan impersonates Chu Chin Chow at Kasim s court, Kasim persuades his brother to tell him where his sudden wealth came from. Even as the greedy Kasim slips out to see what he can find at Hasan s cave, Hasan is plotting further violence and thievery.