每次看古装片听人说:愿闻其翔,都觉得怪怪的。i is a Dimensional Police officer who jumps into "Retro World" (レトロワールド, Retoro Wārudo) to hunt down the criminal molikan.com organization "Doubt" (ダウト, Dauto). There, she faces off against her former partner Yui, who now works for Doubt.