Serina is a clumsy person who can't even do right turns while driving, but she is always the perfect housewife for her beloved husband Takefumi. Serina wouldn't mind even being his shadow. An encounter with the private detective Jinnai, though, changes her life. Being indebted to him, she starts working at his agency. While doing some undercover work, she is able to uncover the truths that her beloved husband was trying to keep away from her and to grow as a person.