Frieren and fern take a magic exam in order to enter the northern plateau. Not only is the test notorious for killing more people than it passes, it requires the one thing that can defeat even the most powerful elf teamwork. May the era of humans begin.

When maou's commitment to total domination is questioned, he hatches a new plan create a world where humans and demons can live in harmony. But first, he'll have to rescue emi, fight both angels and demons, and find someone to cover his shift!

Hilarity and fun ensues when satan ends up in modern day japan without any magic to return, and starts working part time in a fast food joint.