When Rentt, the undead adventurer, last saw vampire hunter Nive Maris, she warned him that vampires would soon attack the city of Maalt. Rentt begins to prepare for that possibility by collaborating with the adventurer's guild, but Lorraine suggests he find the source of his divinity first in order to strengthen his abilities. They decide to visit Rentt's hometown of Hathara to find that source, but before that, Rentt has to gather materials for Alize's new wand. He goes to the New Moon Dungeon to do so and reaches a mine on the fourth floor. However, once there he encounters something unexpected and legendary—an earth dragon!

Find out if Rentt gets swallowed yet again by a dragon in volume 8 of The Unwanted Undead Adventurer manga!