The game starts following a 10 year ago alien invasion that ended up leaving earth in ashes. As a result of this humanity is forced to begin setting up civilization in the skies as repairs continue on the ground. The military is portrayed as having devised an express training program to allow for the quick, cheap and easy training of soldiers. The game is set up such that players get to enjoy the opportunity to fight all kinds of enemies, aliens and robots. In the process of playing, you will also have the opportunity to collect weapons and fight them as hard as you can in this futuristic action game. take note, once the earth is safe, its destiny is in your hands.