Seo Yul is a rescue team chief and explorer responsible for search and rescue operations at dungeon accident sites. In a desperate moment when he is captured by a dungeon boss while trying to save a colleague during a rescue operation, Seo Yul awakens as the hidden class ‘Labyrinth Architect’. Having gained the ability to design and develop his own labyrinths, Seo Yul utilizes these mazes to confront a crisis threatening the world…