The half-destroyed Yukio is under heavy attack from the mighty monster "Hercules," the Commander's Sword, which emerges from the snow. Tetsuo desperately tries to defend himself, but he is gradually cornered by the enemy's overwhelming power and calculated tactics. In this desperate situation, the measure Tetsuo takes to turn the tide of the battle is... communication for the first time!

As Mall is forced into a defensive position, Ao returns, consumed by rage, and together with the "Human Land," confronts the enemy. Surrounded by monster tamers from "E-RDE's Light (Vierde)," Ao skillfully manipulates the terrain and fire to outmaneuver his enemies. Meanwhile, the village chief, who was once a member of "E-RDE (Erde)," reveals Sagami's past!