After sealing away the Great Maou Anther, peace seemed to return to the world, until strange incidents began to occur.
Behind them lurks a mysterious figure, stirring up chaos from the shadows.
As the explorers investigate, they realize the mastermind may be trying to recreate the same events that once happened in a previous world.
To confirm this, they head for the Maou Castle, where the enraged Maou Astana awaits.

After the clash with Astana came to an end, a shocking truth comes to light:
Maou Ragi has been deceived by the mastermind and is now on the move toward the State of Abul.

If Ragi's plan succeeds, the centuries-long pact between humans and Mamonos will be shattered.
Now, it's up to the explorers to find Ragi, and stop the mastermind's scheme before it's too late.