In the years following the victory of humanity over the three other factions in the fateful conflict of 2410, most of the known universe has been occupied by an intergalactic menace known as the Kyllen. Slavery for most of the civilized species only became an unavoidable reality once the freedom-loving citizens lost their political and social autonomy sometime in the year 2610. Even the humans have lost their freedom and must struggle in slavery amongst the rest of the universe.