It's been nine long years since the first outbreak when Inter Planetary Corps members Johnson and Stone crushed an alien invasion on a remote space research station. For nine years the horror has ceased. Times have changed in many ways - the threat of war no longer hangs like a dark shroud over the Federation colonies, every member aware of the possibility of invasion, everyone afraid, every one now together... safe. The IPC has now grown, strengthened, mainly due to the alliance of the six major races in the Federation colonies. Because of this, the IPC became more respected due to the fact that one race were far more likely to respect the law if one of their own was giving the orders. Problems, it seemed, were long gone and the Federation could look forward to an indefinite peace. But Johnson and Stone, those heroes who witnessed such terror, could not rest easy... Reports of problems at Federation Colony Alpha-Five, home of several hundred crew members, has been transmitting emergency signals for the past few hours. Federation HQ fears the worst, it's almost as if history is repeating itself. The four strongest members of the IPC's marine force are called together, but just two will make the journey to FCA5 - their mission brief unclear. The horror is about to continue.