While hunting weak monsters in a labyrinth, perennial bronze-class adventurer Rennt discovers an unexplored passageway. He excitedly begins searching it, hoping to earn wealth and renown, but instead he encounters a dragon, the strongest of all monsters.

In the dungeon, Rentt encounters a rookie adventurer named Rina and attempts to enlist her aid with his predicament.

Seeking answers about his new life, Rentt turns to an old adventuring partner for guidance.

As Rentt prepares to explore a previously uncharted region of the labyrinth, he discovers more about what triggers his ability to evolve.

Rentt rejoins the guild under an assumed name and sets out to explore the uncharted section of the labyrinth, where he encounters an enigmatic and formidable stranger.

After proving himself worthy, Rentt is given the opportunity to take the Bronze-class exam. Together, he and two young adventurers must overcome the challenges that lie ahead in the Labyrinth of the New Moon.

After leading Laura and Ryze to battle against the final boss of the Bronze exams, Rentt is confronted by Sheila, who has grown suspicious of his true identity.

A curious Rentt accepts a low-paying quest from a young girl who needs a rare medicinal ingredient to cure the ailing manager of her orphanage.

Rentt is given a job by a secretive and important family that has great influence over the city of Maalt.

Rentt makes his way through a complex maze, and its owner gives him his choice of magic item as a reward.

While contemplating his perilous choice to drink the vial of vampire blood, Rentt recounts the story of his past and the events that inspired him to follow his dream of becoming a Mythril-class adventurer.