Kaden Pace, a soldier injured while on a mission, hides the extent of his damage by wearing his high-tech armor, desperate to prove his worth to his administrators and make himself useful in order to hold on to his independence. But during a simple assignment to escort two cadets across the country to retrieve the armor of a dead warrior, things start to fall apart.

They meet Shun, a young man with a secret, who steals the armor they were supposed to recover. Chasing Shun brings them to an abandoned town, where they encounter even more trouble. Stranded in the deserted city, Kaden finds...