The Demon Lord is defeated by a human hero; to find his replacement, the demon kin hold a competition; Helck, a human and mortal enemy, is among the participants.
After Helck blocks an attack meant for Edil, Vermilio becomes convinced that he is an enemy; the floor gives way and everyone falls into a dark underground room.
Hyura and the others escape Castle Urum, but soon find themselves surrounded again; Azudra arrives to subdue the winged knights; Azudra begins plotting.
Helck and Vermilio bid farewell to the mysterious island and its residents as they sail away with a stowaway Piwi aboard; they run into a massive whirlpool.
Helck and company end up in the Erille Kingdom where they must fight the barbarians of the Tothman Tribe; the Tothman King goes berserk after tapping into a mysterious power.
Helck and company use their winnings from the cooking competition to buy a map leading to the Empire; they make plans to go northwest into the ruins of two destroyed kingdoms.
Vermilio is frightened by Helck's power as he goes berserk during his battle with Augis; it makes her recall the words of the Great Witch who warned her about Helck.
When they were little, Helck and his younger brother Cless lost both of their parents; one day, Cless gets very sick and Helck begs for someone to save him.
Only half a month after Cless departs on his expedition, monsters begin to appear in greater numbers than ever before; the kingdom enacts a military draft to combat them.
Helck arrives at the Demon Lord's castle and senses a powerful presence; it turns out to be Azudra of the Four Elite Lords, who makes a plea for peace.
Hyura and Edil battle it out at Castle Thor while a strange relationship starts between them; Mikaros is confronted by Azudra and reveals a past grudge.
Ushio is intercepted by a young woman, one of four who've been trained to inherit the Beast Spear; faced with the truth, Ushio must decide whether to hand over the spear to its rightful owner.
Nagare comes to terms with Ushio as the wielder of the spear; tensions rise as Moritsuna, the most favored and most powerful successor of the Beast Spear, arrives.