Naoko Ishikawa, a Japanese history teacher, is assigned to a dilapidated high school in a sparsely populated area. In the lifeless town, where no young people are to be seen, only the elderly. Naoko is welcomed by the vice-principal, Wada and the guidance counselor, Ikegami. Naoko's welcome party is held at Ikegami's house. His elderly father, Tadashi, is the town mayor, and Naoko is surprised by the youth of his wife, Asami. At the party, Naoko is given cloudy local sake to drink. Soon, Naoko's consciousness becomes hazy, and she is carried to the bedroom where she is subjected to the lewd caresses of men... The next day, Naoko wakes up in her room and cannot determine whether what happened last night was a dream or reality. Enduring a hangover headache, Naoko goes to school. In Naoko's class, there is a student named Kinoshita. When Kinoshita suddenly starts acting violently in the classroom, a female student, Misato,says, "He's sick."
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