Four years into her married life, housewife Mizuki Amane receives an unexpected request from her husband one day—asking her to help care for his injured uncle. Although Mizuki had always felt uncomfortable with her uncle-in-law's constant dirty talk, she couldn't refuse her husband and reluctantly agrees. The next day, when Mizuki visits the uncle's home, she's met with an unforeseen turn of events. The uncle shows no signs of injury and immediately resumes his usual perverted remarks, revealing himself as a lecherous old man. In truth, he had faked the injury to get Mizuki alone and finally make her his. Without warning, he lunges at her, going straight for her chest...