the state of decay

Mankind has sealed itself away inside impermeable glass domes, scattered across the surface of the Earth, that let only sunlight through its almost impossible-to-breach surface. The reason is fear.

There is no child who is not told of the many dangers of the Wilderness, where only prowling beasts await in search for fresh blood and the thrill of the hunt. Like all humans, they know that noone has ever returned from the mysterious territory outside their safe, enclosed homes.

Metal Wing is an organization created before the domes were erected to serve as a means of communication between the isolated populations. The messengers are usually young, as to be able to endure the long hours of each journey and to be able to defend themselves should any mishap occur during the trip. Their means of travel is by air, for which they have domesticated and bred a specific species of flying lizard, commonly called "dragon."

In one of the domes, because of the crowding and poor conditions, a plague has broken out. It infects the mind, drives the victim to madness, and forces them to seek refuge in suicide. In panic, the leaders of this dome are rapidly sending out their Metal Wing messengers to the other domes in desperate calls for medical supplies, research, and aid.