Reiko has an only son who will be going to college in the spring. Out of love, she has been overprotective towards her son, but one day she receives a call that her son has shoplifted... Just when it was decided that he would go to college through a recommendation, her son's scandal occurs. Reiko pleads with the teachers, saying, "For the sake of my son's college entrance...", and they offer her a condition for a settlement: "To entertain the male teachers for just one day." Reiko does as they say for the sake of her beloved son, but before she knows it, she begins to become aware of her own masochism...