After 22 years with the husband she loves, Manami has watched their child grow into an adult and hoped they could rediscover the intimacy of their younger days. But her husband no longer touches her, making it clear that he has lost interest in her as a woman. She tries to convince herself that growing old this way is still happiness, yet her suppressed desire only grows stronger and her body aches for stimulation. Unable to keep lying to herself, she finally reaches her limit and decides to betray him for the first time by spending one passionate day with another man.