Young novelist Haruhiko, along with his girlfriend Ririko, are having lunch with his cousin Yoko as she talks about an important night from three years ago. We cut to:  Jiro visits a bar run by Akira and Yoko and reunites after a long absence. Akira and Jiro are best friends since college. Yoko and Akira are now married, but Yoko had a relationship with Jiro in her past. The three friends are excited to be reunited, but at the same time, there is a sense of tension. Yoko and Jiro disappeared while Akira was in the bathroom. Two people burning up under the overpass. Akira catches them in the act...  Haruhiko begins writing a novel based on these three people. Ririko tries to stop Haruhiko from sinking into Yoko excessively, but the world of novels has an unexpected ending...