Starts off with a mysterious organization gathering the strongest high school students in Korea for the eponymous competition, offering a single wish to the winner. There reasons, find the "Key" to take down the gods. Enter Jin Mo-Ri, a 17 year old high school student with Goku-style hair who was taught a special brand of Taekwondo by his grandfather. After winning his 300th consecutive street brawl, he happily declares himself the strongest guy around before running into a strange blond man who invites him to the tournament. While disinterested at first, he decides to go after getting his first loss against said blond-haired man. Along the way he meets the other contestants and makes two constant companions in Yu Mi-Ra, a swordswoman, and Han Dae-Wi, a Karate user.