The old man, seemingly nearing the end of his life and balding, is in fact a perverted creature who dedicates his entire existence to the training of young girls. His insatiable desires persist until death, leaving their mark one after another on the innocent girl's body. As the relentless days of training continue without end, subtle changes begin to emerge within the girl's mind, until eventually she starts seeking pleasure on her own. The dramatic transformation throughout this process is the highlight of this work.