A sudden summer accident shatters the peaceful lives of two couples, dragging a happily married editor into a web of grief, human selfishness, and her husband's hidden secrets.
How did Mitsu and Azusa feel about seeing each other on the third Friday? Why were the two of them on the same bus that day? Sakiko and Jitsuo develop a strange sense of solidarity by sharing their feelings of in agony while the interview with the people involved is also futile and the truth is not clear.
