In an alternate world, instead of the pandemic, a different worldwide problem occurred. The outbreak of the first dungeons. Strange monsters appeared out of the sudden, mysterious portals. While modern human weapons were capable of dealing with the initial outbreak, only special individuals, later known as Dungeoneers could deal with them through the use of special skills and abilities.

This is a series of stories revolving around some of the first Dungeoneers and what they would later go on to do as the world continues to be afflicted by increasingly more dangerous dungeons.