Niuniu is a crocodile who has a very large mouth. She loves to make friends with different animals, but she also secretly wants to eat them. One day, Niuniu and her friends go to a picnic in the forest. Suddenly, a big bad wolf appears to them, but Niuniu defeats the big bad wolf by herself. Her friends overhears Niuniu talk to the wolf and realize that Niuniu might want to eat her friends and become terribly frightened. What will happen to the animals? Will Niuniu learn to be a good friend after all?