Natori Hanae is a beautiful woman who doesn't seem like she's 70 years old, full of vitality. Even after her husband passed away and she became single, men still flock to her. One day, she introduced a man she called her boyfriend to her daughter and grandson, causing quite the stir. Apparently, they're dating with the intention of remarrying. The family was naturally shocked, but especially her grandson Koutarou, who was driven by jealousy and resorted to physical action because he didn't want to lose his grandmother. And then…
