Yumi is a devoted wife supporting her struggling writer husband. Though not financially well-off, they share warm and loving days together. One day, her husband's novel gets picked up for serialization, filling them both with joy. However, their happiness doesn't last long. After being touched by a lewd act, Yumi impulsively finds her gaze drawn to another man's erect cock. Sensing the change in his wife, her husband transforms their past love into sex, then disappears right before Yumi's eyes...