The world changed when the dungeons appeared and with dungeons, people with super-human powers appeared. These people were called Hunters. People from all over the world came to Lexus City, the origin of dungeons, to gain power of super humans. H is one of such people. But after so many years and having gained no results. H has given up on idea of becoming a hunter and now he's living an average salaryman's 9-5 life. But his life is about to change.