The weakest of the weak, E-class hunter Jinwoo Sung has no money, no talent, and no prospects to speak of. And when he enters a hidden dungeon that fateful day, he ends up being left to die in the aftermath of a horrendous tragedy. At death's door, Jinwoo is suddenly invited to be a 'player' by a mysterious voice. Desperate to live, Jinwoo jumps at the chance...but what is this strange new leveling system that only he can see?

When Jinwoo sets about mentoring one of Jinho's recruits--who also happens to be his sister's good friend...a White Tiger Guild training operation seems like the perfect opportunity to show her what being a hunter really entails. But the moment he and Songyi enter the gate, Jinwoo realizes something is wrong. With a flash of red, the exit vanishes, stranding them and the White Tiger trainees in a frozen forest for what could be weeks--or until someone...

Thus far, Jinwoo has managed to keep his rapid evolution hidden from his fellow hunters. When he arrives at his latest assignment, though, he is greeted by a group of familiar faces--Joohee, Mr. Song, and the other survivors of the double dungeon are gathered for the raid, and his comrades can't help but notice Jinwoo's drastic change in stature! Jinwoo intends to act the weakling he was before, but when their party is joined by a group of criminals...