After her husband's death, on the night before the forty-ninth day memorial, Yuko falls into a forbidden relationship with her father-in-law, whose scent reminds her of her late husband. Unable to forget her husband, she begins to see his father as a substitute. "Hold me, Father-in-law... take his place..." she whispers, secretly wishing to return to her husband in her heart. While drawn to the warmth of her father-in-law, her heart still carries her love for her late husband. Will her father-in-law accept this bond, or does her heart belong to her husband forever? The story deepens as it searches for the answer.