Out of the blue, a "job-change quest" pops up in Jinwoo's window. Feeling that it may help him get stronger, he enters the gate. Inside, he fights wave after wave of enemies, culminating in a knight who brings back memories of the Cartenon Temple.

Over a decade after 'gates' connecting worlds appeared, awakening 'hunters' with superpowers, weakest hunter Sung Jinwoo encounters a double dungeon and accepts a mysterious quest, becoming the only one able to level up, changing his fate.

(a recap of the episodes from season 1 + the first 2 episodes of season 2 into a movie format)