On her 14th birthday, Mayumi Doujima promises her parents to abandon her astronaut dreams if she can't find a long-ago seen star. Enter Manabu Soutouin, a quirky individual who offers to aid in the search with Yubiwa Academy's enigmatic Pretty Boy Detective Club. This club, known for their motto 'Be pretty, be a boy, be a detective,' joins Mayumi, who possesses a unique gift—seeing what others can't. With her exceptional eyesight that reveals hidden details and dangers, the group embarks on the quest for the elusive star. As their pursuit unfolds, the club becomes ensnared in a mystery far grander than anticipated.