The Ryota Family joins the ranks of the “High-Income Families,” and each member of the family receives a magic cart with special functions. Though they become capable of getting even greater quantities of drop items, sorting it all out becomes an even bigger challenge. They reach out to Erza for help, but… just then, Ryota is summoned by the Village Chief to deal with a sudden emergency…!!

Ryota Sato is a salaried worker for a toxic company. Suddenly, he’s transported into a strange dungeon! Then, it turns out that he’s in possession of the mysterious S-rank drop skill. In a world where everything gets dropped from various monsters, it was exactly the strongest unique skill out there. Then, beautiful girls and women gather around Ryota, and his income also rapidly increases! But, even more incidents are happening in this other world full of benefits…?!

Ryota has established a brand by utilizing his S-rank drop skill. In addition to his increasing recognition, his income is also drastically increasing with new items and a magic cart! Ryota is excited, but the level of trouble is also significantly escalating with things like being solicited by a mysterious handsome guy and being involved in a "magic storm" that makes it impossible to use magic?!

Ryota and his friends, who have been fighting for Selen, are now back in their hometown of Cyclo. Then, with the addition of the beautiful magician Celeste, they start up the Ryota Family and by using their team play, Ryota takes down a lot of valuable monsters. However, something bizarre happens on the day of preparation for the harvest festival…?! What will the Ryota family do…?!!

Ryota Sato gets the surprise of his life when he's suddenly transported into another world and nearly clobbered at the hands of the young, pretty adventurer Emily Brown. This new world revolves around defeating monsters and profiting on whatever they drop—food, money, items, etc. Unfortunately for Ryota, he has no skills to speak of...until he learns he has the ability to get rare drops! Suddenly his luck turns around...or does it?

The battle for the new dungeon "Selen" has become more and more intense. And now, rare monsters and adventurers from Hetero stand in Ryota’s way! On top of that, even the paranormal being, the “Dungeon Master," has appeared...!! Can Ryota and the others win this battle?!

The drops in all of the dungeons of Cyclo have mysteriously disappeared! Clint the Dungeon Chief tasks Ryota with finding a solution. Having a hunch that the root of the problem lies in Nihonium, Ryota goes with Alice to conduct an investigation. Waiting for them there is the dreaded Dungeon Master of Nihonium…!?