Higashi Chizuru describes her relationship with her live-in partner, whom she's been with since college, as "just a roommate without any romantic feelings." However, one day, she reunites with her ex-boyfriend at a high school reunion. Nostalgic and sentimental about her youth and memories, she ends up going to a hotel with him. The sex after so long is far more stimulating than she imagined, and she's surprised by the pleasure. Since then, Chizuru, awakened to the joy of being desired by men, starts playing around with men she meets through a dating app. Meanwhile, Ikuta Saeko married a businessman 22 years her senior whom she met through a marriage agency last year. She says the deciding factors were her preference for older men and his financial stability. However, her husband's possessiveness is stronger than she expected, with him calling her multiple times a day, making her feel suffocated. As stress builds up, a rebellious spirit sprouts, and she starts visiting a female-oriented sex service. Yet, the desires she's suppressed for years aren't easily satisfied, and she begins to feel unsatisfied. Chizuru, triggered by the reunion at the class gathering, revives her past romantic feelings and goes straight to a hotel. Sex with someone other than her partner is fresh and ignites a new fire in her heart. Saeko, unable to endure her husband's excessive control after marriage, starts going to a female-oriented sex service out of rebellion, but even that can't contain her overflowing desires, and she seeks further stimulation. The two women step onto forbidden paths to escape the boredom and stress lurking in their daily lives. Chizuru gradually becomes engrossed with the men she meets through the dating app, while Saeko becomes addicted to the pleasure she gets from the sex service.