In the city of Sorasaki exists a secret group of mysterious protectors who thwart the evil plans of sinister scoundrels, malevolent malefactors and nefarious ne'er-do-wells. High school student Momo Minamoto dreamed of becoming a police officer like her late father, but as she searches for a missing friend, she exhibits a special ability that’s secretly noticed, so she gets recruited as the newest member of Tsukikage. A group of high school girl spies with special abilities and fighting skills who battle criminal groups within Sorasaki.