A married woman in her sexual prime suffers from a sexless marriage and becomes dependent on daytime masturbation. One day, her colleague catches her in the act. From that moment, she falls under his control—though she verbally resists, her body responds sensitively. Her hidden orifices grow wet and hypersensitive as she accepts another man's cock besides her husband's. Drowning in this pleasure, she begins to enjoy a life of submission and domination.