When temporal agent Ramsey "Bruiser" Bones wakes up in a cave three thousand years into the future, he finds himself immediately immersed in a brain-melting puzzle involving the erasure of all history as it is known. Not only does he have to find a way to defend the fabric of history from a time-eating alien race of slugs, and save his girlfriend, he has to remember just who in the hell is actuially was, again, anyway, to begin with...