How Not to Summon a Demon Lord

Diablo encontra por acaso uma mulher que foge de um agente da igreja, e acaba envolvido em um confronto. Quem é a mulher misteriosa que emana tanta energia mágica, e que aventuras ela trará para Diablo, Rem e Shera?

Diablo, Shera, and Rem head out to the plains to test out new magic. While using said Flight Magic, Diablo spots the light of magic energy rising up from deep within the forest, so he makes haste towards its source. However, his spell gives out half way, and he goes plummeting down! When he lands, he finds the Head Priest, Lumachina under attack from the Paladin, Gewalt.

Diablo and the others leave Faltra and arrive at Zircon Tower. There they meet an adventurer, Horn, who talks to Diablo about a new dungeon that has appeared - a dungeon that Diablo suspects is the one he created. Meanwhile, Lumachina gets into an argument with a man claiming to belong to the Paladin Brigade who kicked aside a woman carrying her baby...

Após uma viagem bastante longa, Diablo e suas companheiras chegam à cidade de Torre de Zircon, aonde foram para procurar o Paladino-chefe Batutta, mas logo se veem em apuros!

Enquanto passavam a noite na mansão de Batutta, Lumachina e Rem desaparecem, e um visitante inesperado avisa Diablo e Shera. O que assola a cidade pode ser muito mais sinistro do que todos esperavam.

Lumachina realizes that Battuta is conducting a large scale curse, threatening the lives of others, but he puts her and Rem to sleep. The two later awaken in an underground space where believers are conducting the ritual. After Horn tells them of Lumachina and Rem's capture, Diablo and Shera take action to rescue them!

Diablo and the others were heading to the dungeon to obtain the hidden treasure that can cure the Death Knell Disease when Laminitus and her army surrounds them and attacks. Their party manages to reach the entrance to the dungeon, but there are now six marks on Lumachina's body, and it's said the victims of the Death Knell Disease will die once there are nine marks...

Após escaparem de um grande perigo, Diablo e seu grupo se dirigem à masmorra onde está a esperança da cura da Doença do Sopro da Morte. Mas os perigos da masmorra não parecem preocupar o Lorde Demônio.

Diablo consegue salvar Horn e acaba descobrindo um certo segredo. Enquanto isso, Shera, Lumachina e Rem precisam enfrentar inimigos perigosos, mas nada se compara ao guardião do 12º piso.

After rescuing Horn, Diablo learns of Horn's secret. Meanwhile, Shera, Rem, and Lumachina make progress through the dungeon and reach the twelfth underground floor. When Rem opens the door, they find the man pursuing Lumachina - Gewalt. To make things worse, a Large Black Dragon appears with a terrifying blast of wind!

O exército de Corrompidos ataca Torre de Zircon e a situação é desesperadora. Diablo conseguiu cumprir seu objetivo de curar Lumachina, mas não chegará a tempo para ajudar na defensa da cidade de Laminitus.

Diablo resolves to return to Zircon Tower at once after learning the city was under attack by the Demon Lord Army. Meanwhile the desert becomes a battlefield as Laminitus and her soldiers wage battle against the Demon Lord Army's Commander, Varakness. Laminitus struggles against the overwhelming might of the Fallen, and just as the final blow is about to be dealt to her, Diablo appears wit...

Lumachina asks Diablo to accompany her to the royal capital, so he decides to stop by Faltra City on the way. Diablo's group is worried about Klem and Edelgard after such a long time apart, and Sylvie informs them that they're at a bakery. Apparently the Fallen, Edelgard, had started a part-time job. Curious, Diablo and the others go to investigate...

Após vencer Varakness e salvar a cidade de Torre de Zircon, Diablo segue de volta com suas amigas para Faltra, para então seguir viagem até a capital real. Antes disso, no entanto, eles devem resolver um tumulto que envolve biscoitos...

Após longa viagem, Diablo e suas companheiras chegam à capital real. O que os aguarda não é uma recepção amistosa, mas eles conseguem entrar, e agora devem formar um plano para lidar com o poder da Igreja.

Diablo and his group arrive at the royal capital, Seven Wall, but the guards stop them at the gates. That explosive situation is resolved by the imperial knight, Alicia. She was awaiting their arrival and leads the group to an inn. That night Diablo reveals to Alicia that the church is out to kill Lumachina...

Diablo e suas companheiras chegam ao local onde está Vishos, mas Lumachina acaba sendo levada. Enquanto isso, Horn entra em desespero por sua impotência e decide fugir...

Diablo and the others are locked up in the sanctuary by Vishos and kept apart from Lumachina. Meanwhile, Horn managed to escape, but she's torn between her desire to flee all by herself and her desire to help her friends. That's when Babalon, the Level Up Goddess that resides within the Holy Grail, appears before Horn.

Vishos consegue um poder que supera o de Diablo, mas Lumachina poderá ajudá-lo a enfrentar o poderoso inimigo. Para isso, é necessário que os fiéis da igreja sabiam para onde direcionar sua fé.

The magic weapon, Europa, God of Destruction, appears from underground and attacks, damaging Diablo. Since its attacks aren’t magic, he can’t reflect them with his Demon Lord’s Ring, and Europe’s barrier keeps his attacks from reaching it. “There’s something I want you to do.”—Diablo seeks Lumachina’s aid while barely avoiding the weapon’s attacks, and…