One day on a train there is 2 young girls and a even younger boy being accompanied by their aunt, and in the other seat is a man who they do not know.
The aunt decides to tell a short story as the kids are all anxious but the kids dislike the story and get angry. So the man decides to intervene and start telling his own story about a "horribly good" girl who gets awarded for being spectacularly good.
The girl gets invited to go to a special park full of pigs due to her being so "horribly good" and takes a walk around being proud to be invited to check out the park and view its wonders
The very good girl soon encounters a wolf and tries to escape it by hidng in a bush, but eventually she got found and regrets her decision to try and be a very good girl, and gets eaten by the wolf
The aunt gets mad at the man for telling such a brutal and violent story, and that his story was not any better than the one she told before hand
The man claims that he kept the kids quiet for a long time, which was something she was not able to do, as he proceeded to walk off the train