The name of the planet is Three. In our day we called it Earth, but so much has happened since we lived here. So much time has gone by. They call the planet Three, because it's the third planet from the Sun - that much at least has remained the same. It's a world of people, and the people seem to be divided into three classes. First, the group ones, the kind of aristocracy that rules the planet. Secondly, the group twos, who perform the incredibly complex skilled labour. And third, those are the ones who can't seem to make it. So long as they behave themselves, nobody bother's them...