Sara is barely scraping by, supporting herself while being exploited by her only living relative, her sister Akemi, and Akemi's freeloading boyfriend. One day, Akemi's embezzlement scheme at work is exposed, and Sara is fired as a scapegoat. Worried about her, Sara's ex-boyfriend Takeshi resolves to separate her from Akemi and her boyfriend by any means necessary. This heartbreaking story portrays the complex bond and intense conflicts between the two sisters.