The strongest woman in the special investigation division Numbers with an IQ of 228, code name 01 'One'. She receives information that human experiments on aphrodisiacs are being conducted at a certain hospital and begins an undercover investigation as a female doctor. With her perfect medical knowledge, she penetrates into the inside and steadily approaches the center. However, due to the blunder of her subordinate, she is captured by her enemy and becomes a test subject for an aphrodisiac rape. Her strong spirit and well-trained