events of the novels take place on several planets: earth; the concilium orb, an artificial planet constructed by the lylmik, and the seat of the galactic council; hibernia, an irish-dominated human colony; caledonia, a scottish-dominated human colony; denali, a snow-covered planet popular as a holiday destination; and the cosmopolitan human colony planet of okanagon. apart from the home planets and colonies of the alien races, a number of other planets are also mentioned in passing.