With Komekko missing and monsters running amuck, everything Megumin and Yunyun have learned is put to the test.

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.