An apocalypse occurs due to infection. It started from a failed experiment that infected scientists in the lab and then spread to many people. Those who have not been infected try to survive.

James, from another country is assigned to rescue the daughter of a vice president of his country. It's not an easy thing. During the course of his mission, he fights many kinds of monsters that exist, alone.

The last thing he remembers is falling off a building after a battle with a powerful monster. When he opened his eyes, to his surprise, he saw someone in front of him. And on seeing himself, the wounds he had previously treated. it seemed that he was saved.

he wince in pain as he tried to sat up. then he speaks, "who are you?"