Sion's defeat of a formidable monster is the talk of the academy, but only he and a few teachers know the truth. Edward in particular can't accept it, so, as a teacher at the academy, he prepares a special lesson for a particular student.

Lady Elfaria issues an order to the academy—gather Frost Walker ice cores. Will quickly heads into the dungeon, but it's already full of others trying to fulfill the order. As he looks for a less crowded area, he spots a fellow student under attack!

The whole academy is buzzing about the upcoming festival, but Will hasn't entered any of the events due to his lack of magic. Instead, he focuses on his studies and earning money for tuition. Then, a top student from his year shows up where he works.

With Colette's help, Will enters the Grand Magic Festival. The crowd goes wild watching him advance with Colette's magic and his own astounding physical strength. But for the third member of their team, it's a reminder of a painful humiliation.

Sion suddenly attacks Will in the middle of their event at the Grand Magic Festival. Sion's emotions fuel his magic as Will struggles to understand Sion's actions. Meanwhile, Julius draws ever closer to the stadium and winning the event.

Will is under attack. Julius is using one of the Twelve Secret Ice Magics invented by the genius mage Elfaria. The arena falls silent in shock and admiration. But no one knows Elfaria's magic better than Will and his counterattack starts now.

Students at the academy suddenly see Will in a different light and he receives a flood of invitations to join their parties for the upcoming all-student praxis. Colette panics and arranges a date with Will, but an unexpected third party shows up.

The all-student praxis begins. Lihanna, Wignall, Julius, Sion, and Will, with Colette tagging along, dive into the dungeon together. Though Will's usefulness is questioned, they push forward to floor 10 and their primary target—the Luminous Naberus.

Will and the others fall into a dangerous region of the dungeon. Separated from the others, Wignall reluctantly opens up to Will, sharing the source of his insecurities. Meanwhile, two mages cloaked in dark magic appear before Colette and Lihanna.

Surrounded by countless monsters, Will and the others are in trouble. Even so, Will says they should fight. Faced with an Evil Grand Duke, the same monster that plunged them down to floor 11, will the party retreat or will they make a stand?

Led by wand and sword, Will strikes at the Grand Duke, but even its defeat may not be enough to grant them escape from the dungeon. Meanwhile, Workner and Edward race to reach them in time, but things look bleak. Still, Will isn't one to give up.

Two months after the all-student praxis, Will and the rest of the sixth-years face their written exams with their ascension to the tower on the line, but Edward's final question shocks everyone. Meanwhile in Urbus Rigarden, the new year's celebration, Terminalia, begins. Crowds watch as the Magia Vander lay out a new Great Barrier. Then, a disturbing magic circle appears in the night sky.

A horde of monsters from the deepest floors appears, transforming the festive capital into a hellish scene. Sensing that they're the targets, the Magia Vander stay within the tower. The city’s defenses fall before the mage slayer wielding High Dinoboros. Colette and the dwarves join Will, putting up a desperate resistance. The Headless activates a magic circle and a Devander appears before Will!

Rosty sacrifices himself to protect Will. The sight causes Will to lose himself, but Workner swoops in to save him. Edward and the other mages put their lives on the line, but the city’s defenses begin to collapse and enemies close in. As Will laments his lack of magic, Finn appears before him carrying a sword. Will possesses but a single spell. Finn asks Will its name and extends a sword to him.

Guided by Finn, Will awakens the power sleeping within him. Enveloped in a silvery light, he slashes through the monsters in the capital, targeting the Devander. He faces the mage-slayer-wielding monster alone. The other students are moved as they watch Will, someone they scorned, do battle. With their cheers at his back, Will presses the fight, but the Devander’s attack breaks his sword in two.

Through the combined powers of wand and sword, Will defeats the Devander with his mageblade Wis. Despite mass casualties and the leader of the attack going unknown, the capital begins to move toward recovery. And so, the day of the magical academy graduation arrives. After losing Rosty and having his path to the tower cut off, Will watches as the names of those ascending to the tower are read...