Japan. An emotionally damaged and withdrawn man named Kyohei Nagashima makes a living sorting through and disposing of the articles of the deceased who have ended their lives alone. While on the job, he meets a cheerful female co-worker named Yuki Kubota. Slowly, he finds himself opening up to her and he begins to remember what it was like to connect with other human beings. However, he soon discovers that she too has a complicated past.