The series follows the story of a young man who is granted the power to transform into a powerful female warrior. He must navigate his new life as a girl at an all-girls school while battling a mysterious organization. The plot centers on his mission to protect the secrets of his fellow female students from this enigmatic group. He teams up with another warrior as they confront the strange enemy forces, all while trying to manage the personal and often embarrassing situations that arise from his transformation and the constant threat of reverting to his male form if he gets too excited.