Makita Takahiro works in the Public Relations Department of Nagawara Seiyaku, a major pharmaceutical company in Japan. One day, on his way to work, he witness someone committing suicide by jumping onto the railway tracks, into the path of an oncoming train. A few days later, he is called into the Vice President, Anjo Takao’s office, where he is told that the suicide may have something to do with one of the drugs manufactured by the company.