Seiya reluctantly agrees to join Isuzu, a captivating girl, on a visit to an amusement park. Little does he realize that this park happens to be the rundown Amagi Brilliant Park, known as Japan's most lackluster attraction. Upon meeting the enigmatic Latifa, the park's true princess, Seiya is unexpectedly tasked with the mission of rescuing the park from imminent closure. To his surprise, he discovers that Amagi Brilliant Park is no ordinary entertainment venue; it is home to a population of magical fairies.