The honest old farmer kindly rescued the injured gray wolf and took good care of it. Unexpectedly, after the evil wolf recovered, his true nature was revealed. He did not care about kindness and came to the farmer's house many times in an attempt to harm the family. The old farmer suddenly realized that he was no longer blindly stupid and joined forces with the hunters in his hometown to set up a trap to eliminate the wolves. The story warns the world that a kind heart must distinguish between good and evil, and must not tolerate evil beasts.
