Five years into their marriage, Nao was dissatisfied with the fact that their sexual activity had become less frequent as her older husband Shuji had gotten older. Nao was waiting to seduce him, but one day, she returned home drunk and carried by her subordinate Kusaka. Secretly excited by the sight of her defenseless as she greeted him, Kusaka pushed her down without caring that his boss Shuji was sleeping next to her... However, it was Shuji, who had arranged for Nao to be cuckolded, harboring a twisted desire to "see his wife being violated by another man"...