Kanie Seiya, a smart and extremely narcissistic high school student, believes that the beautiful but reserved Sento Isuzu has invited him on a date at an amusement park called Amagi Brilliant Park. Much to his chagrin, not only is the location a run-down facility, the supposed date is merely a recruitment tour where Sento and Princess Latifa Fleuranza, the owner of the theme park, ask him to become the park's new manager.