An Oblivion's Indigo

Two colonies set out from Earth. One would travel the solar system and return in fifty years. The other, by design, would never come back. The crew of the returning ship, however, finds that during its absence, it missed a rather crucial planetary event: the Apocalypse. Soon the last remaining humans--those in the second, wandering colony--are about to be thrust into a final battle for souls between the forces of good and evil. Evil is much better prepared for the fight, though. The futures of both mankind and the afterlife depend upon the actions of all the humans caught in the struggles. Even though the forces they are up against are no less powerful than deity, humans with enough willpower can sometimes do amazing things...