Sunny is a sunshine dragon, a little one, to be more specific.
She is afraid of flying and keeps hiding from strangers in a deep dark cave. But Willy is not the kind of guy who would leave someone alone with their fears.
A little bit of wit combined with a lot of insistence works well against fears – it doesn't take very long before Sunny hovers bravely in the cloudless sky.
Indeed, when the sunshine dragon is happy, there is no room for gloomy clouds in the sky.