Janitor Hiroharu Nonoyama (Ken Watanabe) discovers a coat filled with cash while working. The coat belongs to Daiki Iwasaki (Hiroshi Tamaki), who lives in a luxury apartment building. When Taiki offers Hiroharu a wad of cash as thanks for returning the coat, Hiroharu refuses and walks away... This incident sparks a connection between the two men, though each has reasons they don't want probed. As Taiki gradually opens up, Hiroharu still carries a secret he doesn't want anyone to know.