The mother in her fifties remarried a deranged man. He forcibly handcuffs her, restraining her with blindfolds and a collar. The stepfather repeatedly inflicts spanking and forces her into perverted masturbation, tormenting her. His obsessive control drives the mother to mental collapse, triggering the son's uncontrollable sexual desires. The stepfather's cruelty toward the mother and the son's lust intertwine, deepening their twisted relationship. A taboo love drama entwining the mother's suffering and pleasure with the son's escalating desires.