The Union in Undead Unluck is a powerful organization dedicated to regulating and enforcing the rules set by the mysterious entity known as "God." They combat supernatural threats, known as Negators and UMAs (Unidentified Mysterious Animals), to maintain order in the world.

The group consists of elite Negators, humans with abilities that defy natural laws, and operates under a strict system where members must complete missions to prevent catastrophic world-altering events.

Apocalypse is a book