A certain tale of a mother-in-law. A single mother, Matsumoto Marina, living alone with her son. While pregnant with her son, her beloved husband ran away, and since then, she has raised her son Yasuhiro all by herself. As her son grew up, he started to look more like the beloved husband who ran off with another woman, and from that point on, she began to see her son as a man. However, two years ago, after her son got married and moved out, her lonely days continued. And then, she fell into the feeling that she had lost her beloved to another woman.
