Sawako (Akari Fukunaga) has no particular interest or motivation towards her job. While putting off serious love relationships, she immerses herself in her hobby of observing middle aged men, becoming absorbed in their world deeply enough as to even create photo collections of older men. However, she can’t seem to get on well with her father (Akio Kaneda), having almost no interaction at all. As she watches her innocent little sister, Rika (Natsuko Obuchi) talk intimately with her father, Sawako begins to see her family as a family of three, her parents and her little sister, and feels left out. Days go by as Sawako tries to fill the void by dating her boss, Okouchi (Kanji Tsuda).
One day at work, she is approached by her curious senior colleague, Mori (Daichi Kaneko). Gradually opening up to each other, they become close when Mori decides to change jobs. As Mori starts to liberate Sawako’s pent up emotions, she feels a burst of emotions like she had never experienced before.