Ruriko is a housewife who indulges in phone sex with strange men while her husband is away. Squeezing pleasure between household chores, she throws herself into these encounters to relieve daily stress. Today, when the newspaper delivery man comes to collect payment, she satisfies him completely, reveling in the pleasure as if basking in the prime of her life. However, her routine is suddenly disrupted by the unexpected appearance of another man. His presence injects a new energy into her stagnant life, gradually shattering the boundaries of her ordinary existence.