In the hybrid realm of Indushil, there is a young boy who wishes to be a player and go to the dungeons. In this world there are dungeons filled with monsters and people who go in the dungeons and defeat the monsters. Those people are called "Players". There are 4 types of players.
1. Assassin type
2. Mage type
3. Brute type
4. Hunter type
This world has ranks from A-Z with Z being the weakest rank made for ordinary people. But there is a cruel secret in this world, which is known only by "Ordinary People".