A low-grade goddess turned arch priest who works hard to acquire party trick skills, a disappointing arch wizard who can only unleash explosion magic once per day, and Kazuma himself, whose only redeeming quality is his good luck. Kazuma despairs over the completely useless party that's been formed.

Wanting to earn some money despite only hard quests being available, Aqua takes on a request to purify a lake filled with alligator monsters, with the others putting her in a cage to keep her safe.