Mirai lives happily with her husband and father-in-law. Her father-in-law is kind, gentle, and treats her very well. Mirai's husband loves her very much, but he suffers from erectile dysfunction. Knowing that he cannot satisfy Mirai, her husband decides to buy aphrodisiac drugs online. However, before he could use them, he receives a business trip request. Afraid of being caught using aphrodisiacs, Mirai's husband decides to put the drugs in the tea he often drinks and store it in the refrigerator. Unexpectedly, Mirai and her father-in-law accidentally drink it. Longing for sexual satisfaction, and now with the added effects of the aphrodisiac, Mirai's father-in-law and daughter-in-law lose their minds and engage in a search for each other's bodies! But even after the drug wears off, Mirai's body cannot forget the pleasure that her father-in-law provided. When making love to her husband, she no longer feels anything, her body now only desires her father-in-law's penis, wanting him to penetrate her, wanting him to fill her womb with his semen...