A man on a motorcycle picks up a girl lying by the roadside, hugging a gnawed corpse. She is covered in blood, but she herself is unharmed—the blood is not hers. The man takes her home and locks her in a room upstairs, while two young men watch them from the window of the house opposite. Finally, the owner of the house leaves for work. The curiosity of the young men from the neighboring house overcomes their common sense, and they break into the apartment they have been watching. It is a strange place: medical flasks, some kind of drugs, and upstairs – a door boarded up with planks. There is the woman. A sudden passion overwhelms one of the young men, and he is powerless against this all-consuming passion…