Mother Keiko, who has been a widow for many years , has been living with his only son Dojun. His son is a meek and quiet person. One day, a serious murder occurred in the city. The poor son did not know why he became the number one suspect. The police actually had no evidence, but they jumped to the conclusion that their son was a murderer. On the other hand, the son has no evidence to prove his innocence. The police, who were eager to close the case, did not think there was any problem with the hasty investigation of the case, and quickly arrested their son. The defense lawyer was incompetent and unreliable. It seemed that the son could not escape the fate of conviction. With no other choice, Mother was forced to conduct an investigation on her own to prove his son's innocence. But as Mother investigated the case step by step, it was discovered that her son was the murderer. In order to protect her son, Mother killed an old scavenger who was an eyewitness. Finally, the son was released, and the replacement for his son was another mentally handicapped young man without a mother. Mother's heart was plunged into great torture, and she had to use acupuncture to dilute the painful memories
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