Sumire is a married female teacher, but recently the couple often have conflicts. This time the school organized a field trip for students, Sumire and the vice principal were sent to survey the location. Since the inn only had one room left, she and the vice principal had to share a room together. Taking advantage of the opportunity to stay with the beautiful and seductive teacher, the vice principal deliberately gave Sumire alcohol, causing her to quickly become drunk and lose consciousness. When she woke up, she found herself being "invaded" by the vice principal. However, with his skillful techniques and sexual experience, the vice principal quickly conquered Sumire. Up until now, she had only had sex with two men, and it had been a long time since she had sex with her husband, causing her sexual desire that had been accumulated for so long to be released. The feeling of pleasure that the vice principal brought made her lust explode, she had never enjoyed this feeling before. Throwing away her teacher's morality, the married woman indulged in sexual pleasure again and again. Sumire exposed her most shameful appearance to him, let him ejaculate into her uterus, wanting to become his own woman!