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…

Daewi shows no mercy in his fight against Mira with the goal of getting the money to help his friend, Woo Seungtae, who suffers from an incurable disease. Mori handily defeats his own semifinal opponent, Brazilian jiu-jitsu user Byeon Jaehee, but is angered by Daewi’s method of defeating Mira by targeting her injuries. Daewi, meanwhile, learns that Seungtae has taken a turn for the worse and strengthens his resolution even further. Then, amidst all this, Mori and Daewi face each other in the final round.

In the first match of the national tournament, Mori loses his team’s opening bout by applying a pressure point he learned from Bongchim of The Six, which renders him immobile. The second bout pits Daewi the tournament’s oldest competitor, 38-year-old Jin Pumgwang, who overwhelms Daewi with powerful attacks acquired through years of hard physical labor. Meanwhile, Commissioner Q is attacked by Drake, a member of Nox, and seriously injured. Q ends up removing his limiter so he can call upon the power of the gods, and the charyeok Joker materializes!

After learning that his grandfather, Jin Taejin, has been confined, Mori rushes to set him free. Daewi and Mira await his arrival at the tournament with no idea what's going on. With Mori missing and Daewi suspended, Mira is forced to kick off the team match alone. She struggles against her opponent, Marin, who evades her attacks and counters with her own sword. When he calls it a National Treasure, it begins to glow white, and its true form is revealed...

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...

The god that appeared over the arena has been shot down by Jaesan's technique. Mori and the rest have fallen into a huge cave, where they battle against Jegal, who has transformed into a god after absorbing the Key. Mori, Daewi, and Mira face him together, but their attacks don't even reach him, and Daewi is severely wounded protecting Mori from Jegal's vicious onslaught. As the situation grows desperate, a memory that had remained dormant in Mori's mind all this time reawakens...