Rika Fujishita was known throughout the neighborhood as the ideal wife and mother, but she harbored one strange secret—she suffered from an extreme desire for exhibitionism. At first, she sought fulfillment from her ordinary husband through exposure-themed training, but his inability to satisfy her needs left her increasingly frustrated. When her son discovered her secret and confronted her, she thought, "He's my son, so surely he'll be able to satisfy this desire." Determined to turn him into a strict sadist, she began training him. As their twisted bond deepened, a new family drama unfolded.