Isuzu shocks Seiya Kanie by asking him out on a date with a gun, making him suspicious of her intentions. Seiya becomes even more skeptical when Isuzu insists they visit Amagi Brilliant Park, which is known for its dangerous and dull attractions, and rude staff. Isuzu then asks Seiya to take over as the park's manager, which further makes Seiya distrustful of her request due to her earlier use of a weapon. Despite his initial doubts, Seiya discovers that Amagi Brilliant Park is not just a regular amusement park, but a genuine Magic Kingdom where performers rely on the energy of park-goers to survive. To make matters worse, the park is on the verge of closing down unless it can attract 250,000 visitors in three months. Seiya finds it hard to believe, but with the assistance of fairies, enormous rodents, and skilled sheep marksmen, he decides to try to save the park. However, the task appears to be impossible as even the park's shuttle service ignores it. Will they be able to resurrect the park before it's too late? The challenge is set: get those turnstiles spinning and save Amagi Brilliant Park!