"God of High School" is an all-styles martial arts tournament for high schoolers from all over Korea. Jin Mori, who lives on his own after parting ways with his grandfather Taejin at a young age, is on his way to the preliminary for his region when he ends up chasing a snatcher. In the midst of his pursuit, he meets Han Daewi and Yoo Mira, two other high schoolers on their way to participate in the preliminary. The only thing on the line is your pride! The only thing you can trust is your fists! Choose any wish, and it will be granted! Such is the power of God! So begins the battle royal featuring the most powerful contenders from all over…

Mira faces off against WWD women’s pro wrestler Mah Miseon, but her swordfighting can’t keep up with Miseon’s well-built body and overwhelming strength. Mori faces the risk of being disqualified from the tournament after interfering with the match between Gang Manseok and Go Gamdo. Park Mujin, a National Assembly member and God of High School’s sponsor, tells Mori that if he can defeat Commissioner Q in a match, he will be allowed to return to the tournament. Meanwhile, as regional preliminaries continue across Korea, a secretive organization schemes behind the scenes. The "key" to fulfilling their desires turns out to be…

The team led by Park Ilpyo, one of the participants considered a top Key candidate, faces the team led by Gwim Gi. Gwim Gi calls upon his charyeok, Jack the Ripper, but Ilpyo uses his antiquated taekkyon fighting style rather than relying on charyeok. Meanwhile, Daewi is suspended from the competition after interfering in a match and hitting Taek. Mira scolds him, but Mori seems distracted. Something he sees on Ilpyo's back looks familiar...

In his battle with Mori, Ilpyo unleashes the charyeok Nine-Tails and awakens as the Key. Mori uses his Blue Dragon Tempest, but Ilpyo stops it easily. The difference in strength between them seems clear, but then, energy suddenly surges forth from Mori's body...