Married woman Natsume finds her heart stirred by the sharp gaze of her male neighbor, and she can no longer suppress her growing desire for him. Unable to get him out of her mind, she finally drops her key on purpose, launching an unexpected seduction. Losing all rationality, she surrenders completely to her emotions and charges forward. Between the man and woman, a force stronger than words draws them together as they lose themselves in passionate sex. With her husband away on a business trip, the two take their time building an intense, honeyed relationship. Entwined in emotion and driven by impulse, they deeply, deeply exchange love.