Savitri

In a South Indian village, a girl named Savitri has a greedy brother who summons a mighty demon to work for him. The demon, Rakshasa, tells him he must be kept busy or he will eat the brother. Eventually, the brother runs out of tasks for Rakshasa, and Savitri must think of an impossible task to keep Rakshasa busy—she challenges the demon to straighten her curly hair.