The quiet classes of some students are interrupted and thrown into chaos when a group of armed men to teeth give up their class. They take David’s collimator, a silent wasteland secretly suffering from terrible memories of a terrifying past. By having in the past a tremendous power that he could not possibly possess, David struggled with the attackers and defeated them, and managed to flee later. Because it depends on his personal survival, but also on those he loves, David must somehow master this superhuman power and use it to protect loved ones and stop aggressors.