Hatifa is tired of her difficult fate and escapes from the place of her enslavement, a quarry in the desert. There she wanders around in freedom, but ultimately helpless, without water or food. Shortly before dying of thirst, she is saved by the sage Simsal, who is traveling with a caravan of the merchant Ganem. Hatifa quickly makes many friends, including the young servant Hodja. Only to him she confides her secret. The girl had to keep the fact that she was a slave to herself. After all, anyone who helps escaped slaves is mercilessly threatened with the death penalty. Out of consideration for the caravan, they both flee, but are soon picked up by Ganem. When he realizes that he can make a lot of money with Hatifa, he sells her again to a quarry.

New teacher Heider takes up his post with great enthusiasm. His unconventional ideas meet with incomprehension and mistrust from the old head teacher Ruppert. When a boy has an accident on a school trip, the children blame Heider. The parents turn against him and he is suspended from his job. But Ruppert has come to respect the new boy. He does not believe he is to blame. Meanwhile, the children are preparing the next mischief. They want to blow up a ruin with explosives found in the forest. Heider is able to prevent this at the last minute. He is rehabilitated and everyone happily awaits his return to school.