Gaston Hardy is a Freelancer currently under the supervision of the United Earth Defense Force. He acts as a Courier, Messenger, and Adjutant to those who acquires his services. His recent contract takes him to Neo-Tokyo's Consortium Branch to act as a third-party mediator for the Earthside Consortium and the Babaika Company in order to take on the role as their Contracted Adjutant.

This is the tale of a world that had long experienced the end of the world.