A big and proud lion, Simba, walks near a river and he meets, among the trees, a small bird who has yellow and green feathers.
He is hungry, so, quietly, he places near the bird because he wants to devour him, but the bird, worried, says:" Don't eat me, please, I will reward your favour ".
The lion accepts.
One day, a giraffe says to the bird: "I saw two hunters, that hunt into the wood, but they aren't catching any animals. I hear they are looking for a lion because they want to bring him to the zoo.
"I'm searching for Simba, but I can't find him. Where is he?"
The bird answers:" I don't know where he is, so let's search Simba".
Finally they find him and they say:" The hunters are looking for you, run away!"
The lion is safe because any promise is a debt.