An unproductive study session results in Megumin and Yunyun having nothing better to do than try and improve Bukkorori's love life.

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.

The demonic Host continues the search for his master, and Megumin may be the only one who can keep him from destroying Axel in the process.