Twelve years into her marriage, Kanae Nakayama lives peacefully with her husband, but after the birth of their child, their sex life gradually faded, leaving almost no romantic or physical connection between them as man and woman. When she visits a massage parlor for the first time, her body unexpectedly reacts—her hidden depths grow sensitive, and a damp stain appears on the crotch of her underwear. Noticing her response, the masseur's fingers slowly begin teasing her vaginal opening. A few days later, driven by secret desires, she returns to the salon. Under the skilled touch of the masseur, her emotions tremble, her aroused married woman's body responding intensely, while his knowing gestures seem to penetrate the deepest corners of her heart.