The anime follows Kurumi Azuchimomoyama, a typical 14-year-old girl attending Egaogaoka Middle School. One day, an angel named "Devilun," resembling a Tasmanian devil, appears before her and grants her the power to become the beautiful magical girl dinosaur angel warrior "Prima Angel," instructing her to battle the evil "Darkness Whales" organization. She begins to take out Darkness Whales members indiscriminately with weapons that reek of blood. The protagonists are three boy classmates of Kurumi who observe the chaos without taking any action.
