Seiya Kanie -- handsome, scholastically successful and athletic, self-confessed narcissist Seiya Kanie is befuddled. His classmate, Isuzu Sento, gives him a musket and asks him out on a date.

Amagi Brilliant Park is operated by the residents of magic nation of Maple Land. It seems like a fantasy, but having been given the ability to hear people's minds by its owner, Queen Latifah, Seiya has no choice but to believe it.

Seiya collapses from fatigue and summer cold after having been busy with managing the park for the past few days. To help Seiya, who's worried about his attendance at school, Moffle and others came up with a plan: Pretend to be Seiya by wearing Mogoot Clan's "magical clone suit" and attend school. However...

Amagi Brilliant Park set a new attendance record after it was selected as the venue for the soccer match. Visitors walk through the entrance gates one after another under Amagi Project's supervision. Latifah prays for them to achieve the target visitor count, but...