Sgt. Raiden Holt is battling for his life following a bloody ambush in which he is the sole survivor. The days that follow are fraught with peril as the young Marine attempts to make his way back to base in one piece which he eventually does, albeit not without overcoming numerous adversities. When his enlistment obligation ends a year later, he returns stateside and takes over as CEO of an upstart space tourism company inherited from his grandfather. Before long, his life is once more placed in danger when he finds himself hurtling through space aboard a sabotaged spaceship with an experimental warp drive that opens a corridor into a parallel universe. Overcoming incredible obstacles, the crew manages to land on a primitive Earth where they are thrust into a constant struggle for survival