Umi, a married woman whose libido skyrockets uncontrollably when she ovulates. Her body temperature rises and she's flushed with heat while constantly in heat. She masturbates all night in bed while covered in sweat. Even that doesn't satisfy her, so she invites a man into her husband's absence home. "I want it inside..." Completely losing her reason, she indulges in animalistic intercourse seeking only pleasure. She extracts every drop of the man's semen with intense fellatio and pounding piston riding position. Intense sex filled with bodily fluids unfolds in the living room with maximum humidity.