After dying in a freak accident, Kazumo reawakens in another world, where he meets the beautiful goddess, Aqua.

After struggling to defeat some giant frogs, Kazuma and Aqua seek out members to join their party; they soon discover Megumin, a magician capable of performing powerful explosions.

Kazuma has formed a group of adventurers. Their first challenge: defeating an army of flying cabbages.

The leader of the Devil King's army seeks revenge after an attack on his castle; Aqua removes a curse.

There are only hard quests being available, but wanting to earn money, Aqua takes on a request to purify a lake filled with alligator monsters; the others put her in a cage to keep her safe.

Megumin continues using Verdia's castle for explosion practise; annoyed, he summons an undead army, but it is quickly defeated by Megumin's explosion magic.