Jinwoo answers a Hunter's Association request to take part in the raid of a D-Rank dungeon, where he encounters a few familiar faces.

Having completed his promise to Jinho to clear 19 dungeons, Jinwoo is stronger than he was when he fought the Cerberus. In order to gather the ingredients for the Elixir of Life and save his mother, he once again enters the S-Rank Demon's Castle dungeon.

After no shortage of hardship, the 4th Jeju Island raid comes to a close. But for Jinwoo, the hunt never ends.