It's the last days of the Vietnam War, and the scale of the violence and destruction that have been unleashed seems unreal. But nothing that Private Duggan has experienced in battle could have prepared him for the thing that just tore his squad to ribbons and then walked through the hellish fire of an airstrike seemingly unscathed. If there is some way to kill it, Duggan isn't sticking around to find out. Now on the run, the lone soldier desperately makes his way through the collapsing country to join the U.S. Army's final evacuation back to the States - but will the chaos and crowds of Saigon be enough to thwart the unrelenting force that is hunting him?