'every object has a story. you have to find out what that story is within yourself.' ~ Kidlet34
to me this looks like the dragon is the Guardian of the Key and with the wings represent the Light and the Dark. The dragon is a Light Dragon and it looks like it's trying to keep the Dark under control. Like it's a key to the Underworld, and if it doesn't stay guarding it day and night, the world is doomed.