Tatsuya visits his aunt, who works at a small local factory. Seeing her for the first time in a while, he finds her as beautiful and gentle as ever. That night, after falling asleep from exhaustion, Tatsuya is awakened by eerie noises coming from the factory. Hesitantly going to investigate, he discovers his aunt and a worker in a strangely unsettling state. From that moment on, Tatsuya begins to see his aunt as a woman, and when he finally confesses his feelings, an unexpected turn of events unfolds.