Sakiko finds it difficult to live in a society which operates under the assumption that people will fall in love with each other. She meets supermarket employee Takahashi when she goes to support a "fall-in-love" campaign by her junior at work. She is startled when she hears him say that there are people who don't fall in love. As Sakiko's mother keeps hurrying her to get married, she decides to move out and rent an apartment with her friend but her friend backs out at the last minute after reconciling with her ex-boyfriend. Just when Sakiko is about to give up, she ends up living with Takahashi under one roof because of their similar values towards romance.