What is the main plot of the man by the window story?

The main theme could be about human relationships. Maybe it shows how people interact with each other in a certain setting.

The main character is surely the man by the window. There may be other characters that he observes from his window, like passers - by or neighbors, but he is the central figure.

Since the title is 'the man in the window story', it's very probable that the main character is the man who is associated with the window. He could be an ordinary person with an extraordinary story or a character with a special role in a more complex plot that involves the window as a significant element.

Since we don't know the exact'man in the window story', the main character is most likely the man in the window. He is the focal point around which the story seems to revolve.

Well, in 'The Open Window', there's this guy Framton Nuttel who's not in the best of health. He goes to visit some people. Vera, a girl there, spins a tale. She says her aunt has had a great loss through the open window. That men in the family went hunting and never returned. When later some figures are seen approaching the open window, Framton thinks they are ghosts and bolts. It's a story full of misdirection and psychological play.

The main plot could potentially revolve around the reaction of the person who sees the face in the window. Maybe it causes fear, curiosity, or sets off a chain of events in their life. It could be a supernatural face, or perhaps it's someone with a hidden agenda. Without reading it, it's hard to be certain.

The story 'the open window' is about a man named Framton Nuttel who is visiting some people in the countryside. A girl, Vera, tells him that her aunt's husband and two brothers went hunting years ago and never returned. She says their ghosts come back through the open window. When Framton sees figures approaching the open window, he is terrified and runs away. However, it turns out that Vera made the whole thing up. She knew her aunt was expecting the hunting party to return at any moment, so she used the open window as a prop to scare Framton for her own amusement.

In 'an open window short story', it often involves a young girl who tells a visitor a spooky story about her uncles' supposed deaths while out hunting. She creates a vivid and eerie atmosphere by using the open window as a key element in her tale.

I'm not sure specifically as I haven't read it in detail, but surely the man by the window is one of the main characters.

I'm not sure specifically which 'the man in the window story' you are referring to. There could be many stories with such a title. It could be about a man who is observed through a window, perhaps he is in a building and someone outside is watching him and there might be a mystery or some kind of emotional drama associated with this scenario.