As the day of both their graduation and the awakening of the Dark God seem to draw ever closer, Megumin gets the feeling Yunyun is keeping secrets from her.

After finally arriving in the city of water, Arcanretia, Megumin is once again having trouble saving up for the next leg of her journey. But she may have found an unexpected source of help in the Religious Order of Axis.

A high-ranked demon has begun lurking the woods near Axel, and the local adventurers--including Megumin and Yunyun--are trying to do something about it.