As a hunter, Jin-Woo’s job is to cross The Gate and fight the creatures on the other side, however because of his rank he is often injured and experiences lots of near-death experiences. But Jin-Woo, why do you put your life on the line like this? Well, it appears to be that there is some reasoning behind his recklessness, because he uses the money he gets from the monster hunting raids to pay for his sick mother’s medical bills.