A neat, chaste, and devoted ideal young wife, who would never even think of cheating. One day, she is attacked by her husband's friend with lustful intentions, but she firmly rejects him. However, during her resistance, she is captivated by something unexpected: an incredibly huge penis. Overwhelmed by its size, the moment it penetrates her, the chaste young wife abandons her humanity. She becomes obsessed with another man's penis, turning into a pervert who constantly screams about the difference from her husband's penis as she repeatedly engages in sexual intercourse.