You are trapped in the Tower of Evil which has 1000 floors with various monsters, boss monsters and many other interesting things, with 100 people you don't know, Dozens of different jobs and kill monsters to gain experience to level up and get many skill, harder it is to climb, Loot lots of drops from monsters, the higher the floor, the stronger the monsters but the nice the quality of the drops, Meet mini bosses every 5 floors and meet the final boss on floor 1000