Tatsuya's magic doesn't follow the rules of the show's own universe, and the movie leans into that contradiction harder than anything in the TV series. The action sequences move like they cost actual money to animate, each spell layering across multiple planes of effect in ways the show's framing rarely allowed before. You're watching a studio throw resources at a character who shouldn't be able to do what he's doing, and the animation itself becomes proof that he's breaking something fundamental.

The seasons are turning toward a second spring, and siblings Tatsuya and Miyuki have completed their first year at First Magic High School. Tatsuya is the underachieving older brother and Miyuki the top-performing younger sister. They spend their spring break at their villa in the Ogasawara Islands, but the calm lasts only briefly. A young woman named Kokoa, who has deserted a naval base, appears before them alone and tells Tatsuya the one thing she wishes for. The film is set partway through the eleventh episode of the Visitor arc and blends sci-fi with the supernatural.