Firstly, you need to watch the video on Goldilocks and the Three Bears to recap on the story.
Then, you need to make a plan of what happens in the story. You could do this by drawing a picture for each part of the story. For example, you could start by drawing a picture of the three bears leaving the cottage while their porridge cools. Next, you could draw Goldilocks entering the house. I wonder if you could add some labels to show what is happening?
Continue this until you have shown the whole story.