The world of Harmony, along with its close-knit colony planets, long ago isolated itself from the rest of the universe. But in a universe where the human-based Confederate Star System fleet finds itself hard-pressed to stand against ever-increasing attacks by the alien Marillon Empire, the Harmonic Empire cannot be left alone. For if the CSS cannot win an alliance with Harmony, the Marils will surely find a way to invade the planet and seize control...