"by the way, this is our first conversation""y-yes...""we're the same age, let's be friends?" single secretary aoi (kano kashii) and married office lady yuria (mami sakurai). they occasionally see each other at the office but never had a chance to talk, knowing each other only by face. one day, they become close due to a strange turn of events. aoi, who is troubled by her affair with her boss, and yuria, who is troubled by her husband's affair. their daily lives suddenly turn into a quagmire.