After Ali Baba finds a thieves' treasure cave, hi is suddenly rich. Then his brother Kasim visits the cave, and things go wrong. The forty thieves find Kasim there, kill him, and cut his body into for pieces. What can Ali Baba do? He wants to bury his brother, but nobody must know how he died. Morgiana, his servant-girl, has the answer. But what can she do when the thieves find Ali Baba and want to kill him, too?