The world under attack by monsters that are pouring from the 'fracture'. And the 'hunters' who hunt those monsters are the most coveted job in the world currently. One day, Oh Yun-Sung who works his hardest from day to day as a worker in a meat restaurant awakens an ability to automatically hunt monsters with perfect techniques and physical prowess like in MMORPG when he presses a button 'Auto Hunting' that appears in front of him...! Note: Includes a prologue.