Ali Baba finds a thieves' treasure cave, and he is suddenly rich. Then his brother Kasim visits the cave, and things go wrong. The forty thieves find Kasim there, kill him, and cut him into four pieces. What can Ali Baba do? He wants to bury his brother quietly, but how can he? Morgiana, his servant-girl, has the answer. But what can she do when the thieves find Ali Baba and want to kill him, too?