Roaring pleasure, resurrected carnal instinct! Repeated masochistic training by unknown lovers! A newlywed couple moves into a new apartment. Just as she is about to change her environment and focus on having a child, the husband tells her he is going on a long business trip. One night, the wife is attacked by a violent man and experiences a pleasure she has never experienced before. The husband calls from his business trip and is worried about his wife's strange behavior, but he has no idea that she has become a shared property of the apartment...