HOW TO BEAT A DRAGON! Having soundly defeated the hero Wataru (albeit through a less-than-scrupulous method), Keima has saved Rokuko from being whisked away to the Imperial Capital. It isn't too long though until another hero shows up on his doorstep...one that proves to be even more trouble than the last! But even Keima isn't so lazy that hell ignore someone harassing his staff. It's time to take care of this nuisance once and for all--but how?

With Dragon Suzuki now a permanent fixture in Keima's dungeon (literally), things seem to finally be taking a turn for the peaceful. That is, until Keima is made mayor of the newly established town surrounding the inn! His first order of business-defeat the wolf-like creature invading his territory. Yet no matter how many golems he throws at it, the beast just keeps on coming! Is this the end for Keima and the Cave of Desire?

Keima can't seem to catch a break. When an adventurer named Wataru arrives at the Cave of Greed, he's not looking for monsters to slay or a room at the inn. He's looking to marry Rokuko! Once it becomes clear he's not just out to split Dungeon Master and Core apart, Keima decides to put his tricks to the test and challenge Wataru to a game. But this isn't any ordinary game. This one's got golem dice, high stakes, and the dungeon's future on the line! Who will be victorious?