Klara is going to die today unless she kills her husband instead. The Calendar Killer has given her that impossible choice. When Jules starts his night shift at a safety helpline for lonely women on their way home Klara's call reaches him.。在郊外一家书店打工的“我”,与“我”同住一屋的静雄,以及“我”的同事佐知子。往来间,佐知子与“我”渐生暧昧,静雄对佐知子亦暗生情愫……互为朋友和恋人的三个年轻人,和一段带着夏日燥动的肆意青春。。