On Yami’s orders, Asta and Noelle go on their first mission with Magna to hunt wild boars. They successfully complete the mission and go to Saussy Village to meet with the mayor, Seyhe.

Suddenly the dungeon is host to several teams racing through traps to the treasure waiting in its depth—including a noted mage from an enemy nation.

The Diamond Kingdom’s secret weapon wields more powerful magic than anyone has seen. The Golden Dawn team is all but decimated. Can he be defeated?

Asta undergoes a startling transformation, fighting like a man possessed. When he learns who’s behind this change, he also learns its shocking price.

Magic Knights from every squad gather for the test that will determine who’ll be a Royal Knight. The vice-captain of the Purple Orcas causes a stir.

Asta and the others manage to meet with the queen of the Heart Kingdom, Loropechika, who had also been chosen by the water spirit, Undine. They are able to confirm that the devil’s curse that they spotted in the Heart Kingdom was originating from Loropechika herself and that the devil was in the Spade Kingdom. Meanwhile, Vanessa, Magna, and Luck went to investigate the Diamond Kingdom and find it in ruins after a single mage of the Spade Kingdom had annihilated them. In order to defeat this devil, Loropechika asks Asta and the others for their help…

Asta and Noelle go to see the Magic Knight Entrance Exams with Yami. The testing site and the anti-birds that gather there are rather nostalgic to Asta and remembers his own experience at the exams last year after seeing the hopefuls from this year.

As the battles in the Heart Kingdom begin to come to an end, Asta and Yami decide to work together as they continue in their fight against Dante Zogratis of the Dark Triad.

Due to Nacht's spell, the Devil who has been granting Asta power since the beginning has appeared physically. To master his Devil powers, Asta must battle and defeat his Devil, and force him to submit. But Asta has other plans... Meanwhile, Yuno, Noelle, and the others grow stronger in order to take their revenge against the Dark Triad.