Since the dawn of humanity we have prospered. Our intelligence is second to none. But our emotions are also nearly impossible to handle. Since the first murderer in history thousands of years ago. Gates have formed from severe emotions and as such abilities to take on the Gates have also appeared. However, it is ones character that develops their abilities. The stronger ones character the stronger ones abilities and the type of 'hunter' the become. In the year 2023 19 year old, Kim Jugeum, is awakened as a Thief and is trying to keep himself afloat while trying to keep his entire family with him. Until one day he is stuck in a Dungeon with someone suspicious... someone with a system.