Karin, whose parents divorced because of her father's affair, became a man-hater, but her body began to grow as a female against her will. In the meantime, her mother remarried. Karin doesn't want to live with her stepfather, but she knows her mother is struggling, so Karin reluctantly agrees. Her stepfather, who looks at Karin with lewd eyes, is devising a plan to conquer the daughter who doesn't warm up to him...