Misako is a mother who single-handedly raises her only son, Nobuo, who attends a cram school. A crisis that suddenly came to a simple but happy mother and child family ... the dismissal of the mother. "At this rate, I won't be able to pay for Nobuo's school fees." Although he desperately tried to find a job, there was no place that would hire Misako, who had nothing to offer. "I have no choice but to sell my body..." Misako endures the shame and humiliation of being held by a stranger. One day, Nobuo finds out about his mother's sloppy life...