The Great Tomb of Nazarick has invaded!! The evil undead sorcerer king known as Ainz Ooal Gown and his minions have invaded the world of Remnant, home to Miyoko's teacher Qrow and her friend Yang Xiao Long. Wasting no time, Ainz has cut off Remnant from any help from the outside world... and claimed all of Vale as part of his Sorcerer Kingdom and the property of the Proctors of Order and Chaos. Ainz promises benevolence under his kingship, but in reality, there is a dark side to his rule. As a new high priority 100 Year Quest normally only granted to S Class mages, Miyoko and her classmate Rem the Oni, have infiltrated Nazarick under the guise of Ainz's newest servants. Now alongside Qrow, his niece Ruby Rose, and Class 777's strongest member Sans the Skeleton, Miyoko must find a way to bring down an Overlord that many have tried and failed to defeat.