After graduating from university, Maki has worked hard as a busy career woman, eventually taking over her parents' company as its president—outworking even her male employees. Though she married a few years ago, she prioritizes her career over raising children, focusing intensely on business while sending her husband overseas, continuing to live alone in Japan. One day, she becomes captivated by a vibrator she encounters... The story follows her discovering new pleasures and exploring herself during breaks from work.