Asuka remarried in search of ordinary happiness, but was struggling with her life with her abusive husband, Mamoru. And Satoru, the son of Mamoru, was subjected to daily violence from Mamoru, and was suffering without being able to talk to anyone. One day, Mamoru gets so angry over something trivial that he handcuffs Asuka's right hand and Satoru's left hand, telling her to keep an eye on Asuka at all times. From that day on, the two were forced to live together. The distance between mother and son-in-law, who have the same suffering, gradually approaches.
