Fourteen years ago, in different locations around the world, mysterious towers, called "Dungeons," started to rise. Within these dungeons, powerful beings called djinns reign over them. When a individual conquers the dungeon successfully, the djinn offers its immense strength in the form of metal vessels, acknowledging him or her as a worthy candidate for the king. In search of their bountiful treasures and the power of jinns, adventurers from many empires and kingdoms venture into the dungeons. Traveling through them, though, isn't an simple job, and only Magi — legendary magicians who choose kings and create nations — can lead people through.