Watanabe Poemi (a.k.a. Kobayashi) is a 10-year-old girl with aspirations of being a famous voice actress. Unfortunately, her school grades are bad and her voice acting is even worse. But when a mysterious alien kills her parents and wreaks havoc all over Tokyo, Poemi grabs a talking fish, skins it into a wand and becomes the magical girl Puni Puni Poemii to save the day.