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Nobushina Naharu has always wanted to become a famous detective.Her dream is to set up a "Detective club" at school, but the teacher requested that a club has to have at least four or more club members to be considered a club. So then, when she has finally gathered 3 other partners, she realizes that they are getting weirder and weirder one by one.
Kasuga Koharu is a small, "runty" type of girl who is forced to join "The Guardian Rose" by the club's director for her prestigious school. "The Guardian Rose" is a group that tends to the rose gardens on the grounds. Curious, Koharu goes to visit the garden, and upon arrival, she's surprised by the sight of a popular and smart young man dressed like a prince. His name is Jordan Kiriya, and sexual tension is sure to ensue!