Yuki had a casual affair with a man she met at the scene of a suicide by jumping. Yuki got married and moved to a huge housing complex. Her life, which seemed to pass peacefully, cracked one day. Saito, the man from the sealed past, appears. Yuki, who is satisfied with her husband, is also embraced by Saito. And her neighbor who looks into the figure, and even her husband who has an affair...