Worried about her son who became reclusive after her divorce, mother Hidemi Ogawa continues to fret over him. As her son grows older, she becomes increasingly troubled by his changes, gradually losing control of her emotions. Ultimately, her instincts as a woman spiral out of control—ripping off his futon, she gives in to impulsive desires directed at his body. The story portrays her torn between maternal love and uncontrollable lust.