A certain mother-in-law's story. Marina Matsumoto, a single mother who lives alone and lonely. Since her beloved husband ran away while she was pregnant with her son, she raised her son Yasuhiro single-handedly. As her son grew older, she began to see him more and more as a man, after he looked just like his beloved husband who ran away with another woman. But two years ago. After her son got married and started living separately, lonely days continued. And she also had the feeling that she had lost her beloved to another woman.
