Around ten years ago, gates that connected our world to another dimension began to appear, leading to the rise of hunters who would traverse these gates to fight the magic beasts within. Sung Jinwoo, E-Rank hunter, is the weakest of them all.

After a scheduled meeting with Jinah's teachers, Jinwoo is asked to talk to one of her classmates, Han Song-yi, who is working as a hunter. In an effort to show her the harsh reality of the job, Jinwoo takes her to a raid designated for new hunters of the White Tiger guild.

After being trapped inside of a red gate, Jinwoo has to contend with a bloodthirsty pack of ice elves who question his humanity.

Jinwoo arrives at Jeju Island to save the S-Rank hunters, but to do that he'll have to face the Ant King.