Kang Hajin, just an ordinary guy working as an employee, carries a huge burden of paying for his sister Kang Araa’s education after their parents died in a dungeon break.
Even though he was interested in becoming a hunter, his dreams shattered when he got the "Programmer" class considered one of the weakest.
But everything changed when he accidentally discovered that his class was actually a bug in the system.
The gods who created the hunter system for their own entertainment… Hajin unknowingly got caught up in their game, and his journey to uncover the mysteries of the hunter world begins.