I have a friend, let's call him Jack, who is very important to me. This importance is not due, I'm afraid, to his qualities as a friend and human being, but in his use. This isn't quiet as bad as it seems - you see, keeping him well is beneficial to all of us, not just me.
Some years ago, a group of scientists and philosophers discovered that reality - as Descartes suggests hypothetically early in his Meditations - exists solely in the individual. While it is true that we think, therefore we are, it only appears to be true for Jack. The rest of us are simply figments of Jack's imagination. When he can't see us, we don't exist. This, however, is a small detail compared to the troubling fact that when he dies, we will most likely vanish.
To this end, I've dedicated my life to keeping "Jack" safe from any danger, as well as any sources likely to made his imagination run riot.
The last thing we need is more dragons.