A decade ago, the emergence of "the Gate" connected the ordinary world to a realm filled with magic and monsters. In response, regular individuals gained superhuman abilities and took on the title of "Hunters" to combat these creatures. Sung Jin-Woo, a twenty-year-old Hunter, is labeled the "World's Weakest" due to his seemingly feeble powers compared to others. Despite this, he diligently hunts monsters in lower-level Gates to cover his mother's medical expenses.
Jin-Woo's life takes a drastic turn when, after a mission gone awry where he believes he's the sole survivor, he wakes up in a hospital three days later to find a mysterious floating screen before him. This "Quest Log" presents him with a challenging training program, with consequences for non-compliance. Initially hesitant due to the difficulty of the quest, Jin-Woo soon discovers that it might be the key to transforming him into one of the world's most formidable Hunters.