Masato has long cherished the elegant and devoted life he shares with his wife Ichika, their years together marked by undiminished warmth. When an unmarked package arrives containing a recording from her past, he watches scenes that reveal a startling encounter with Yamazaki and the unexpected involvement of Sasaki. As the details emerge, Masato is surprised to find his fascination growing rather than diminishing, stirring new questions about the woman he thought he knew completely.