What is in this image? Describe it in Simple English. As plain and simple as possible. No complex words, no long sentences. Still make sure to describe everything in the image.

This image shows a dragon, a horse, and a person. The dragon is big with two heads. Both heads are looking at a blank sign. In the background, there are clouds and a castle with a pointy tower. The person is sitting on the horse. The person wears a hat with a ball on top and a mask over their mouth. The horse looks sad or tired. Everything is drawn with black lines and the picture has no colors.