In this world where Hunters with various magical powers battle monsters from invading the defenseless humanity, Sung Jin-Woo was the weakest of all the Hunters, barely able to make a living. However, a mysterious System grants him the power of the 'Player', setting him on a course for an incredible and oftentimes perilous Journey. Follow Sung Jin-Woo as he embarks on an adventure to become an unparalleled existence through his "Level-Up" system - the only one in the entire world!