Buck and Hawk transport refugees of a planetary disaster to a new home. Buck allows a fugitive woman named Asteria Eleefa to board the Searcher. Eleefa is a member of a harsh mutant race called the Dorians, who hide their faces behind decorated masks. Ruthless Dorian leader Koldar claims that Eleefa is a murderess and hence demands that Eleefa be handed over to him. When Buck refuses to oblige Koldar's demand, Koldar decides to turn up the temperature on the Searcher.