A room in an apartment building. The room is occupied by a pale, full-bodied married woman who, perhaps because it is hot or because she is careless, does not close the curtains and opens all the windows. She is completely careless. One day, a neighbor casually peeked in the window and found his wife in the middle of a lewd act by herself. Since that day, the man has been peeping into the neighbor's room, taking spy photos, and ...