Introduction: In an alternate version of Earth a guy named Sky happened to be at the wrong place at the wrong time and encountered an alien race that inhabits the bodies of others. After various situations and choices he comes to three decisions. The first, which poses the moderate challenge, is to wipe out the alien invaders. The second, and easiest, ignore them and let them  take course with the possibility of them wiping out humanity. The final being the ultimate challenge, find a peaceful solution between the two races to which both can prosper and live together. his decisions determine the survival of either race, with that in mind............