South Korea overcame a national crisis, but it was not thanks to the legendary S rank Hunters. The true savior was hidden away in classified documents: Kang Hyun, an unmeasurable rank monster who slaughtered the beast Leviathan with a single wave of his hand. He suffers from extreme laziness, communication issues, and severe alcohol dependency, with a particular love for whiskey.

He makes only one demand to the Management Bureau: send him to the Hunter Academy. When asked if the unmeasurable beast intends to enroll as a student, his response comes quickly. He wants to go as a professor.