Aiz Wallenstein, the Sword Princess, is known as one of the most powerful warriors from one of the most powerful groups in the city of Orario: Loki Familia. With them, she ventures into the deepest parts of the labyrinthine Dungeon beneath the city, stalking the monstrous denizens that lurk there and vanquishing them with the blazing light of her sword. But when she meets a certain white-haired boy, the encounter will change both of them forever...

After returning from an arduous but successful expedition deep into the Dungeon, Loki Familia gets a rare chance to rest their weary bones. Ainz is troubled about a certain rabbit-like boy, but that won't stop Lefiya and the others from dragging her along on an all-girls shopping trip! What's more, the Monsterphilia is fast approaching, promising a day filled with exciting attractions and events. But the gods and mortals of Orario may get more entertainment than they bargained for when all Dungeon breaks loose!

Aiz and her friends make their way to the town nestled deep within the Dungeon only to stumble upon a macabre murder! After determining that culprit must be extremely powerful, the manhunt begins but everyone seems to think that the Loki Familia might be the most likely suspects?! On the surface, Loki embarks on an investigation of her own, delving deep into the sewers to get to the bottom of a mystery that may affect the future of all her children—and Orario as a whole...

Aiz's quest to become the strongest continues and brings her back to the depths of the dungeon with Loki Familia time and time again! But can her trials in the dungeon prepare her to catch a murderer!?

Just strength. That's what I need for my wish... There has been a sudden shift, and suddenly the reason for Aiz's desire for strength has changed...Is it Bell? Aiz has finally reached her goal of ranking up to level 6! What new adventures await her now in the dungeon...?

Now Level Six, Aiz has returned to the dungeon to test her new skills and picks up a new quest while she's there. Traveling with adventurers from Hermes familia, they journey deeper into the dungeon. But when the Red-headed Tamer shows up again, will Aiz's new level be enough to keep her, and her teammates, alive?

The Dungeon calls adventurers deep into its labyrinth in search of personal growth, strength, and experience. But the Dungeon is a tough master-one wrong move, one bad choice, and permanent death awaits. Lefiya, Bete, and Filvis arrive at the twenty-fourth-floor pantry looking for Aiz but instead stumble upon Hermes Familia in distress. A deadly foe has the adventurers up against the ropes and struggling to stay alive. They've uncovered the mystery of the carnivorous flower monsters but are losing hope they'll make it back to the surface to warn Orario. Can they escape the Dungeon, or will it finally have the last word?

With the deadly clash on the twenty-fourth floor over, Aiz and the others return to Orario to deal with their losses. However, Loki Familia are not long for the surface, as they have declared an expedition to unknown dungeon territory-the fifty-ninth floor-in search of answers. Preparations begin, and soon the Familia sets out with allies alongside.

The time for Loki Familia's expedition to brave the unknown depths of the Dungeon has arrived, and Aiz must wrap up her training sessions with Bell. While the novice adventurer's secrets have continued to elude the Sword Princess, Bell's improvement under her is unmistakable when the Dungeon pushes him to his limit. Later, as the expedition makes its way to the fifty-ninth floor, Aiz must fulfill her duty to Loki Familia. But déjà vu strikes when she learns a certain white-haired boy is fighting for his life against a minotaur once more...

Loki Familia's journey to the Dungeon's depths is well under way, but the real trial is just beginning. An attack from dragons far below sends Lefiya plummeting toward the fifty-eighth floor, with half the expedition's party after her. Now floors apart, those separated struggle to hold their ground against the Dragon's Urn while Aiz and the others race to rejoin them. The promise of answers awaiting on the fifty-ninth floor lures the expedition down deeper than ever before, but no one could have prepared for what lurks in the unknown...When all hope is lost and the finest have fallen, who among them will exceed their limits?!