SEASON 1 (ep. 1-13 + OVA): As an adventurer living in Orario, Bell Cranel becomes the only member of Hestia Familia. Although he was very weak compared to veteran dungeon crawlers, he gained a special skill that enables him to become stronger quickly as long as his feelings towards Aiz, the Sword Princess whom he looks up to, does not change. With the help of his Goddess, Hestia and other people who cares for him, he vows to be strong enough to stand side-by-side with Aiz and protect everyone important to him.

SEASON 2 (ep. 1-12 + Special): As Hestia Familia gradually grows in size, Bell must contend with a number of threats from other gods and their familias, including Apollo, Ishtar, and Ares, all while continuing to strive to catch up to his idol Ais.

SEASON 3 (ep. 1-12): Hestia Familia faces an unparalleled crisis when Bell encounters an injured vouivre (dragon-type monster girl) in the Dungeon. . . one who can talk. His decision to protect the girl, who will come to be called Weine, upends everything he and his familia thought they understood about monsters and threatens to put them at odds with Orario as a whole. But Weine is just part of greater schemes concerning talking monsters, schemes which Hestia Familia will soon find themselves at the heart of.

SEASON 4 (ep. 1-22): Intrepid adventurer Bell Cranel has leveled up, but he can’t rest on his dungeoneering laurels just yet. The Hestia Familia still has a long way to go before it can stand toe-to-toe with the other Familias of Orario — but before Bell can set out on his next mission, reports of a brutal murder rock the adventuring community! One of Bell’s trusted allies stands accused of the horrible crime, and it’s up to Bell and his friends to clear their name and uncover a nefarious plot brewing in the dungeon’s dark depths.

Is It Wrong to Try to Pick Up Girls in a Dungeon?: Arrow of the Orion (MOVIE): The goddess Artemis seeks an adventurer she calls Orion at Orario's Holy Moon Festival. By drawing a magical spear from a crystal, Bell identifies himself as Orion. Artemis needs Orion to wield the spear to defeat the monster Antares, which had been sealed away in the Ruins of Elsus on the opposite side of the continent from Orario, but has recently broken free. The Hestia Familia undertakes a quest to defeat Antares, meeting Ryū and the Hermes Familia on the way to Elsus.