Mayumi, a housewife living peacefully with her husband and son Takashi. One day, when I started to feel the unpleasant air in my daily life, I was hit by a trap on the train. When I was again in the coffin, when I grasped my hand and looked back at it, one son, Takashi. "If you raise your voice, my son will be caught... I just had to kill my voice and get squid..."