Seiya Kanie is a narcissistic, highly intelligent high school student who is coerced by a mysterious transfer student, Isuzu Sento, into visiting the dilapidated Amagi Brilliant Park. The park is a failing amusement park that serves as a sanctuary for refugees from the magical realm of Maple Land. To prevent the park from closing permanently, Seiya is tasked with becoming its new manager, aiming to attract 500,000 visitors within three months. As the manager, Seiya must navigate the eccentric personalities of the magical staff, manage the park's dwindling resources, and deal with the looming threat of corporate takeover. The series blends comedy, fantasy, and workplace drama as Seiya uses his sharp intellect and leadership skills to revitalize the park, all while uncovering the deeper secrets behind the magical creatures' reliance on human 'Anima' to survive.